chemical formula for elements?
Q. How many chemical elements are there like hydrogen oxygen helium carbon chlorine etc ...where can i find database for their formula eg. H , HE, C, CL, Na etc and their atomic wt. atomic number...pls help
Asked by sammy - Sun Oct 28 07:17:04 2007 - - 2 Answers - 0 Comments
A. Google "periodic table" and there are at least three versions of the chart.
Answered by Dad's found yer scoo'er - Sun Oct 28 07:19:35 2007
Q. How many chemical elements are there like hydrogen oxygen helium carbon chlorine etc ...where can i find database for their formula eg. H , HE, C, CL, Na etc and their atomic wt. atomic number...pls help
Asked by sammy - Sun Oct 28 07:17:04 2007 - - 2 Answers - 0 Comments
A. Google "periodic table" and there are at least three versions of the chart.
Answered by Dad's found yer scoo'er - Sun Oct 28 07:19:35 2007
Question for "Bonding and Chemical Formulas"?
Q. Please help with my chemistry homework! I kinda know how to do it...but i'm not sure what it means. there are 20 similar problems...here's a sample. (its in the form of a chart) _Element_Electrons in outer level _Charge on Ion _Element_Electrons in outer level_ charge on ion_ Formula then under element is Alumuniam, 3 electrons in outer level. (now i need the charge on ion) then element is Chlorine, 7 electrons, (now i need charge on ion and the formula) Thanks!
Asked by Sapphire - Thu Nov 20 15:31:35 2008 - - 1 Answers - 0 Comments
Q. Please help with my chemistry homework! I kinda know how to do it...but i'm not sure what it means. there are 20 similar problems...here's a sample. (its in the form of a chart) _Element_Electrons in outer level _Charge on Ion _Element_Electrons in outer level_ charge on ion_ Formula then under element is Alumuniam, 3 electrons in outer level. (now i need the charge on ion) then element is Chlorine, 7 electrons, (now i need charge on ion and the formula) Thanks!
Asked by Sapphire - Thu Nov 20 15:31:35 2008 - - 1 Answers - 0 Comments
what type of chemical bond would you expect between a calcium atom and a chlorine atom?
Q. please help thanx :) i have more queastions if you can help me more that would be great 72) what element tend to form ionic bonds ? 74) if gallium (Ga) ins have 3+ charge and sulfer(S) ions have a 2- charge, the formula for the compund gallium sulfide is?? 76) Valence electrons are found ?? 77) wat type of chemical bond would you expect between an oxygen atom and a chlorine atom? 78) which subatomic particle is transferred in ionic bonds ?
Asked by kierstin123 - Tue Mar 11 17:22:04 2008 - - 2 Answers - 0 Comments
A. Ionic bond: calcium is a metal and chlorine is a non-metal. 72) An ionic bond will always be formed between a metal and a non-metal. 74) Ga2S3 (Cross the charges over...) 76) Valence electrons are found on the outermost electron cloud around the nucleus. 77) Covalent because they are both nonmetals and share the electrons. 78) Electrons are transferred in ionic bonds. In covalent bonds, they are shared. Hope this helps!
Answered by chemdork321 - Wed Mar 12 08:54:33 2008
Q. please help thanx :) i have more queastions if you can help me more that would be great 72) what element tend to form ionic bonds ? 74) if gallium (Ga) ins have 3+ charge and sulfer(S) ions have a 2- charge, the formula for the compund gallium sulfide is?? 76) Valence electrons are found ?? 77) wat type of chemical bond would you expect between an oxygen atom and a chlorine atom? 78) which subatomic particle is transferred in ionic bonds ?
Asked by kierstin123 - Tue Mar 11 17:22:04 2008 - - 2 Answers - 0 Comments
A. Ionic bond: calcium is a metal and chlorine is a non-metal. 72) An ionic bond will always be formed between a metal and a non-metal. 74) Ga2S3 (Cross the charges over...) 76) Valence electrons are found on the outermost electron cloud around the nucleus. 77) Covalent because they are both nonmetals and share the electrons. 78) Electrons are transferred in ionic bonds. In covalent bonds, they are shared. Hope this helps!
Answered by chemdork321 - Wed Mar 12 08:54:33 2008
Quick chemistry periodic table help! Please!?
Q. Part A: Comparing chemical formula of compound formed with fluorine Which element (silicon, fluorine, lithium) is most similar to carbon? Least similar? Part B: Comparing chemical formula of compound formed with chlorine Which element (gallium, iodine, tin) is most similar to indium? Least similar?
Asked by LAXMAN - Fri Oct 9 01:16:05 2009 - - 1 Answers - 0 Comments
Q. Part A: Comparing chemical formula of compound formed with fluorine Which element (silicon, fluorine, lithium) is most similar to carbon? Least similar? Part B: Comparing chemical formula of compound formed with chlorine Which element (gallium, iodine, tin) is most similar to indium? Least similar?
Asked by LAXMAN - Fri Oct 9 01:16:05 2009 - - 1 Answers - 0 Comments
Chemistry Questions True or False help please?
Q. Please either answer True or False to the following Chemistry questions. I forgot my book at school and this is due tomorrow :(. TRUE or FALSE 1. Scientists learned directly about subatomic particles by opening an atom and looking at the parts. 2. The Bohr Model is the most modern atomic theory. 3. In the chemical formula for Aspirin, C(2)H(8)O(4), the numbers 9, 8, and 4 are subscripts. 4. If element G has 56 protons and 81 neutrons, and element H has 56 protons and 82 neutrons, then the elements are isotopes. 5. The idea that matter is made up of indivisible particles called atoms was proposed by Democritus. 6. In Thomson's experiment, the gas in the tube gave off rays that were made of negatively charged particles called neutrons. [cont.]
Asked by Mike - Mon Feb 12 17:12:26 2007 - - 2 Answers - 0 Comments
A. 1. Scientists learned directly about subatomic particles by opening an atom and looking at the parts. False 2. The Bohr Model is the most modern atomic theory. False 3. In the chemical formula for Aspirin, C(2)H(8)O(4), the numbers 9, 8, and 4 are subscripts. True 4. If element G has 56 protons and 81 neutrons, and element H has 56 protons and 82 neutrons, then the elements are isotopes. false 5. The idea that matter is made up of indivisible particles called atoms was proposed by Democritus. True 6. In Thomson's experiment, the gas in the tube gave off rays that were made of negatively charged particles called neutrons. false 7. The weakest of the four forces within the atom is the force most easily observed in our daily lives.… [cont.]
Answered by Yo tu amigo - Mon Feb 12 17:25:09 2007
Q. Please either answer True or False to the following Chemistry questions. I forgot my book at school and this is due tomorrow :(. TRUE or FALSE 1. Scientists learned directly about subatomic particles by opening an atom and looking at the parts. 2. The Bohr Model is the most modern atomic theory. 3. In the chemical formula for Aspirin, C(2)H(8)O(4), the numbers 9, 8, and 4 are subscripts. 4. If element G has 56 protons and 81 neutrons, and element H has 56 protons and 82 neutrons, then the elements are isotopes. 5. The idea that matter is made up of indivisible particles called atoms was proposed by Democritus. 6. In Thomson's experiment, the gas in the tube gave off rays that were made of negatively charged particles called neutrons. [cont.]
Asked by Mike - Mon Feb 12 17:12:26 2007 - - 2 Answers - 0 Comments
A. 1. Scientists learned directly about subatomic particles by opening an atom and looking at the parts. False 2. The Bohr Model is the most modern atomic theory. False 3. In the chemical formula for Aspirin, C(2)H(8)O(4), the numbers 9, 8, and 4 are subscripts. True 4. If element G has 56 protons and 81 neutrons, and element H has 56 protons and 82 neutrons, then the elements are isotopes. false 5. The idea that matter is made up of indivisible particles called atoms was proposed by Democritus. True 6. In Thomson's experiment, the gas in the tube gave off rays that were made of negatively charged particles called neutrons. false 7. The weakest of the four forces within the atom is the force most easily observed in our daily lives.… [cont.]
Answered by Yo tu amigo - Mon Feb 12 17:25:09 2007
What is the total number of electrons shared between the atoms represented in this formula?
Q. (1) 1 (3) 8 (2) 2 (4) 4 Which statement describes what occurs as two atoms of bromine combine to become a molecule of bromine? (1) Energy is absorbed as a bond is formed. (2) Energy is absorbed as a bond is broken. (3) Energy is released as a bond is formed. (4) Energy is released as a bond is broken. 9 What is the chemical formula for iron (III) oxide? (1) FeO (3) Fe3O (2) Fe2O3 (4) Fe3O2 10 An atom of which element has the greatest attraction for the electrons in a bond with a hydrogen atom? (1) Chlorine (3) silicon (2) Phosphorus (4) sulfur 11 Which property could be used to identify a compound in the laboratory? (1) Mass (3) temperature (2) Melting point (4) volume 7 Which element is a metal that is in the liquid phase at… [cont.]
Asked by Help P - Thu Oct 9 06:43:00 2008 - - 1 Answers - 0 Comments
A. 3 2 1 2 4 1
Answered by Lordcoup - Thu Oct 9 07:41:50 2008
Q. (1) 1 (3) 8 (2) 2 (4) 4 Which statement describes what occurs as two atoms of bromine combine to become a molecule of bromine? (1) Energy is absorbed as a bond is formed. (2) Energy is absorbed as a bond is broken. (3) Energy is released as a bond is formed. (4) Energy is released as a bond is broken. 9 What is the chemical formula for iron (III) oxide? (1) FeO (3) Fe3O (2) Fe2O3 (4) Fe3O2 10 An atom of which element has the greatest attraction for the electrons in a bond with a hydrogen atom? (1) Chlorine (3) silicon (2) Phosphorus (4) sulfur 11 Which property could be used to identify a compound in the laboratory? (1) Mass (3) temperature (2) Melting point (4) volume 7 Which element is a metal that is in the liquid phase at… [cont.]
Asked by Help P - Thu Oct 9 06:43:00 2008 - - 1 Answers - 0 Comments
A. 3 2 1 2 4 1
Answered by Lordcoup - Thu Oct 9 07:41:50 2008
Chemical formuals and names?!?
Q. Okay, what's the chemical formula and the name of the compound that is produced when you blend these elements? a) Potassium and bromine b) Beryllium and nitrogen c) Barium and chlorine d) Magnesium and sulfur e) Aluminum and phosphorous
Asked by Saaskie - Thu Dec 14 11:03:47 2006 - - 8 Answers - 0 Comments
A. a) potassium bromide - KBr b) beryllium nitride - Be3N2 c) barium chloride - BaCl2 d) magnesium sulfide - MgS e) aluminum phosphide - AlP
Answered by Mark H - Thu Dec 14 11:07:52 2006
Q. Okay, what's the chemical formula and the name of the compound that is produced when you blend these elements? a) Potassium and bromine b) Beryllium and nitrogen c) Barium and chlorine d) Magnesium and sulfur e) Aluminum and phosphorous
Asked by Saaskie - Thu Dec 14 11:03:47 2006 - - 8 Answers - 0 Comments
A. a) potassium bromide - KBr b) beryllium nitride - Be3N2 c) barium chloride - BaCl2 d) magnesium sulfide - MgS e) aluminum phosphide - AlP
Answered by Mark H - Thu Dec 14 11:07:52 2006
Could you help me with this chemistry question?
Q. Write chemical formulas for and name the molecular compounds formed by the following pairs of elements: a)phosphorus and chlorine and please tell the steps "Nick" have you tried to shut the fu*ck up
Asked by Kyle - Sun Oct 25 22:15:33 2009 - - 3 Answers - 0 Comments
A. have you tried winking?
Answered by unknown - Sun Oct 25 22:20:34 2009
Q. Write chemical formulas for and name the molecular compounds formed by the following pairs of elements: a)phosphorus and chlorine and please tell the steps "Nick" have you tried to shut the fu*ck up
Asked by Kyle - Sun Oct 25 22:15:33 2009 - - 3 Answers - 0 Comments
A. have you tried winking?
Answered by unknown - Sun Oct 25 22:20:34 2009
Chemstry Project help!?
Q. If you guys can find as much as you can it would be very, very, VERY helpful. =D 1. 6.02 x 1023 of anything. Calculations required. 2. A cube made of sturdy material with a total volume of 1.0 L. On the note card include the dimensions of each side of the cube. Calculations required. (no work, no credit, no kidding) 3. A cube made of sturdy material with a total volume of 1.0 mL. On the note card include the dimensions of each side of the cube. Calculations required. (no work, no credit, no kidding) 4. An acid base indicator from nature other than one you have previously made for this class. The indicator can not be a substance sold as an indicator. State the source of the indicator, what color the indicator is with an acid… [cont.]
Asked by james - Sat May 3 13:55:45 2008 - - 1 Answers - 1 Comments
A. WOW! which one of mr. millers students posted this on yahoo? james clark? talk about lazyy! just kidding. when ever you get the awnsers let me know! sincerley, mr. millers third period!
Answered by taylor_10291 - Sun May 4 21:13:58 2008
Q. If you guys can find as much as you can it would be very, very, VERY helpful. =D 1. 6.02 x 1023 of anything. Calculations required. 2. A cube made of sturdy material with a total volume of 1.0 L. On the note card include the dimensions of each side of the cube. Calculations required. (no work, no credit, no kidding) 3. A cube made of sturdy material with a total volume of 1.0 mL. On the note card include the dimensions of each side of the cube. Calculations required. (no work, no credit, no kidding) 4. An acid base indicator from nature other than one you have previously made for this class. The indicator can not be a substance sold as an indicator. State the source of the indicator, what color the indicator is with an acid… [cont.]
Asked by james - Sat May 3 13:55:45 2008 - - 1 Answers - 1 Comments
A. WOW! which one of mr. millers students posted this on yahoo? james clark? talk about lazyy! just kidding. when ever you get the awnsers let me know! sincerley, mr. millers third period!
Answered by taylor_10291 - Sun May 4 21:13:58 2008
Chemistry Scavenger Hunt (will vote best answer if you answer the most correctly)?
Q. I need to be able to find these items easily around the house!!! 2. A cube made of sturdy material with a calculated density. Include the dimensions of each side of the cube, mass and density. Calculations required. 4. An acid base indicator from nature. The indicator can not be a substance sold as an indicator. State the source of the indicator, color the indicator is with an acid and what color it is with a base. 7. A sample containing two FD&C dyes - the dyes must be listed on the label and structures of each must be included. 9. A chemistry cartoon from a newspaper or magazine. Include a breif statement about the concept of the cartoon. 10. A .05M solution of a substance. Include the calculations you did, a description of how you… [cont.]
Asked by Joe C - Thu Dec 11 19:50:58 2008 - - 1 Answers - 0 Comments
A. 4. Blackberries, black currants, and black raspberries change from red in acids to dark blue or violet in basic solution.
Answered by home t - Thu Dec 11 20:05:53 2008
Q. I need to be able to find these items easily around the house!!! 2. A cube made of sturdy material with a calculated density. Include the dimensions of each side of the cube, mass and density. Calculations required. 4. An acid base indicator from nature. The indicator can not be a substance sold as an indicator. State the source of the indicator, color the indicator is with an acid and what color it is with a base. 7. A sample containing two FD&C dyes - the dyes must be listed on the label and structures of each must be included. 9. A chemistry cartoon from a newspaper or magazine. Include a breif statement about the concept of the cartoon. 10. A .05M solution of a substance. Include the calculations you did, a description of how you… [cont.]
Asked by Joe C - Thu Dec 11 19:50:58 2008 - - 1 Answers - 0 Comments
A. 4. Blackberries, black currants, and black raspberries change from red in acids to dark blue or violet in basic solution.
Answered by home t - Thu Dec 11 20:05:53 2008
Chemistry Please Help !!!!!! (Study Guide)?
Q. 1. The number of atoms in a mole of any pure substance is called 2. What can be said about 1 mol Ag and 1 mol Au? They are equal in mass They contain the same number of atoms Their molar masses are equal They have the same atomic mass 3. An Avogadro s number of any element is equivalent to? the atomic number of that element the mass number of that element 6.022 x 1023 particles 12 g of that element 4. The atomic mass of hydrogen is 1.008 amu. The reason that this value is not a whole number is that hydrogen only exists as a diatomic molecule the mass of hydrogen is the sum of the masses of the protons and electrons in the atom the mass of a proton is not exactly equal to 1 amu hydrogen has more than one isotope 5.… [cont.]
Asked by joewrite2007 - Mon Feb 9 09:36:49 2009 - - 1 Answers - 0 Comments
A. 1 Avogadro's number 2. Contain the same number of atoms 3. 6.022 x 10^23 particles 4. Hydrogen has more than one isotope (each of which is not exactly a whole number of atomic mass units) 5. The number of atoms or ions of each type 6. 3.01 x 10^23 7. Changes the formula so that it no longer represents the compound 8. mole of the element 9. average atomic mass 10. KClO3 11. SiO2 12. N2H4
Answered by TheOnlyBeldin - Mon Feb 9 09:46:07 2009
Q. 1. The number of atoms in a mole of any pure substance is called 2. What can be said about 1 mol Ag and 1 mol Au? They are equal in mass They contain the same number of atoms Their molar masses are equal They have the same atomic mass 3. An Avogadro s number of any element is equivalent to? the atomic number of that element the mass number of that element 6.022 x 1023 particles 12 g of that element 4. The atomic mass of hydrogen is 1.008 amu. The reason that this value is not a whole number is that hydrogen only exists as a diatomic molecule the mass of hydrogen is the sum of the masses of the protons and electrons in the atom the mass of a proton is not exactly equal to 1 amu hydrogen has more than one isotope 5.… [cont.]
Asked by joewrite2007 - Mon Feb 9 09:36:49 2009 - - 1 Answers - 0 Comments
A. 1 Avogadro's number 2. Contain the same number of atoms 3. 6.022 x 10^23 particles 4. Hydrogen has more than one isotope (each of which is not exactly a whole number of atomic mass units) 5. The number of atoms or ions of each type 6. 3.01 x 10^23 7. Changes the formula so that it no longer represents the compound 8. mole of the element 9. average atomic mass 10. KClO3 11. SiO2 12. N2H4
Answered by TheOnlyBeldin - Mon Feb 9 09:46:07 2009
Ionic, molecular Compounds, elements and acids?
Q. I did these questions for homework, and was wondering if I made any mistakes. Indicate whether the chemical is an element, ionic compound, molecular compound, or an acid. Write the correct formulas for each of the following according to the type of chemical. 1. nitric acid - acid, didn't know 2. nitrogen - element, N 3. oxygen -element, O 4. argon - element, Ar 5. sulfur dioxide- molecular compound, CO*2 6. carbon monoxide-molecular compound, CO 7. ozone - element, O*3 8. ethanol - element, C*2HsOH 9. sucrose - element, C*12H*22O*11 10. sulfur- element, S 11. chlorine dioxide - molecular compound, ClO*2 12. methanol - element, CH*3OH 13. ammonia - element, NH*3 14. chromic oxide- didn't know 15. uranium (Vl) fluoride - Ionic compound,… [cont.]
Asked by (: Muffin Man :) - Wed Oct 3 21:01:36 2007 - - 1 Answers - 0 Comments
A. I caught what I could in this question 1. HNO3 ozone, ethanol, sucrose, methanol, ammonia - these are all molecular compounds, not elements - elements are what you can find on the periodic table. I don't know if it's important for this question, but nitrogen and oxygen are not found in nature as the elements, they are found as molecular compounds, N2 and O2 5. sulfur dioxide is SO2 8. ethanol is C2H5OH 14. ionic, Cr2O3 15. UF6 17. NaHS 19. you forgot the Na in the formula
Answered by ChemistryMom - Wed Oct 3 21:27:37 2007
Q. I did these questions for homework, and was wondering if I made any mistakes. Indicate whether the chemical is an element, ionic compound, molecular compound, or an acid. Write the correct formulas for each of the following according to the type of chemical. 1. nitric acid - acid, didn't know 2. nitrogen - element, N 3. oxygen -element, O 4. argon - element, Ar 5. sulfur dioxide- molecular compound, CO*2 6. carbon monoxide-molecular compound, CO 7. ozone - element, O*3 8. ethanol - element, C*2HsOH 9. sucrose - element, C*12H*22O*11 10. sulfur- element, S 11. chlorine dioxide - molecular compound, ClO*2 12. methanol - element, CH*3OH 13. ammonia - element, NH*3 14. chromic oxide- didn't know 15. uranium (Vl) fluoride - Ionic compound,… [cont.]
Asked by (: Muffin Man :) - Wed Oct 3 21:01:36 2007 - - 1 Answers - 0 Comments
A. I caught what I could in this question 1. HNO3 ozone, ethanol, sucrose, methanol, ammonia - these are all molecular compounds, not elements - elements are what you can find on the periodic table. I don't know if it's important for this question, but nitrogen and oxygen are not found in nature as the elements, they are found as molecular compounds, N2 and O2 5. sulfur dioxide is SO2 8. ethanol is C2H5OH 14. ionic, Cr2O3 15. UF6 17. NaHS 19. you forgot the Na in the formula
Answered by ChemistryMom - Wed Oct 3 21:27:37 2007
Science HELP!!!!!!!!!!!?
Q. 1. What are the components of a chemical formula? A. Atomic weight and mass number B. Element symbols and numbers C. Element symbols and atomic weight D. None of the above 9. The components of a chemical formula of a compound are a reminder of ___. A. the composition of the compound B. the atomic number of the elements in the compound C. the atomic mass of the elements in the compound D. the number of neutrons in the compound 17. A chemical formula of an ionic compound ___. A. describes the ratio of protons in the compound B. describes the ratio of neutrons in the compound C. describes the ratio of the ions in the compound D. indicates that the compound is actually covalent 20. How many chlorine ions… [cont.]
Asked by ~*True Love*~ - Fri Dec 19 11:54:42 2008 - - 4 Answers - 0 Comments
A. 1. What are the components of a chemical formula? B: Element symbols and numbers 9. The components of a chemical formula of a compound are a reminder of ___. A. the composition of the compound 17. A chemical formula of an ionic compound ___. C. describes the ratio of the ions in the compound 20. How many chlorine ions are in CaCl2 ? B. Two 45. How many copper ions are in Cu2O ? B. Two
Answered by I run fast. - Fri Dec 19 12:00:41 2008
Q. 1. What are the components of a chemical formula? A. Atomic weight and mass number B. Element symbols and numbers C. Element symbols and atomic weight D. None of the above 9. The components of a chemical formula of a compound are a reminder of ___. A. the composition of the compound B. the atomic number of the elements in the compound C. the atomic mass of the elements in the compound D. the number of neutrons in the compound 17. A chemical formula of an ionic compound ___. A. describes the ratio of protons in the compound B. describes the ratio of neutrons in the compound C. describes the ratio of the ions in the compound D. indicates that the compound is actually covalent 20. How many chlorine ions… [cont.]
Asked by ~*True Love*~ - Fri Dec 19 11:54:42 2008 - - 4 Answers - 0 Comments
A. 1. What are the components of a chemical formula? B: Element symbols and numbers 9. The components of a chemical formula of a compound are a reminder of ___. A. the composition of the compound 17. A chemical formula of an ionic compound ___. C. describes the ratio of the ions in the compound 20. How many chlorine ions are in CaCl2 ? B. Two 45. How many copper ions are in Cu2O ? B. Two
Answered by I run fast. - Fri Dec 19 12:00:41 2008
Can you please help me on these chemisrty questions i don't get them please help me?
Q. need some help on these chemistry questions i don't get them.3.What is the charge of the common ion of each of the following elements a)beryllium b)potassium c)bromine d)oxygen 4.What is the chemical formula for the compound formed by each of the following combinations of elements a)lithium and iodine b)calcium and bromine c)sodium and oxygen d)aluminum and chlorine 5.name each of the compounds in question 4.Please number off your answers thanks
Asked by josephbonavota - Mon Nov 9 19:47:03 2009 - - 1 Answers - 0 Comments
A. 3a)2+ b)1+ c)1- d)2- 4a)LiI b)CaBr2 c)Na2O d)AlCl3 5a)Lithium Iodide b)calcium bromide c)sodium oxide d)aluminum chloride try to understand how to do these by searching them up good luck
Answered by :) - Mon Nov 9 20:08:32 2009
Q. need some help on these chemistry questions i don't get them.3.What is the charge of the common ion of each of the following elements a)beryllium b)potassium c)bromine d)oxygen 4.What is the chemical formula for the compound formed by each of the following combinations of elements a)lithium and iodine b)calcium and bromine c)sodium and oxygen d)aluminum and chlorine 5.name each of the compounds in question 4.Please number off your answers thanks
Asked by josephbonavota - Mon Nov 9 19:47:03 2009 - - 1 Answers - 0 Comments
A. 3a)2+ b)1+ c)1- d)2- 4a)LiI b)CaBr2 c)Na2O d)AlCl3 5a)Lithium Iodide b)calcium bromide c)sodium oxide d)aluminum chloride try to understand how to do these by searching them up good luck
Answered by :) - Mon Nov 9 20:08:32 2009
CHEMISTRY HELP PLEASE!?
Q. When an atom of chlorine forms an ionic bond with an atom of sodium, the atom of chlorine 1. loses an electron 2. loses a proton 3. becomes an ion with a smaller radius than the atom of chlorine 4. becomes an ion with a larger radius than the atom of chlorine What is the approximate percent by mass of oxygen in SO3? 1. 20% 2. 40% 3. 60% 4. 80% Lithium and potassium have similar chemical properties because the atoms of both elements have the same 1. mass number 2. atomic number 3. number of electron shells 4. number of valence electrons The chemical formula for nickel (II) bromide is 1. Ni2Br 2. NiBr2 3. N2Br 4. NBr2 The nucleus of an atom of cobalt-58 contains 1. 27 protons… [cont.]
Asked by Paige S - Tue Jan 6 16:23:48 2009 - - 2 Answers - 0 Comments
A. Question 1... answer is choice 4 Question 2... answer is choice 3 Question 3... answer is choice 4 Question 4... answer is choice 2 Question 5... answer is choice 1 *** #1 chlorine gains an electron, sodium loses one. If it lost a proton, it wouldn't be chlorine anymore and the reaction would be nuclear. not chemical.. anyway the first two choices are not correct...that leaves the second two... when an atom becomes an ion, it's radius changes. if it gains an electron, it's radius increases. if it loses one, it's radius decreases... meaning (-) ions are larger than the neutral atom and (+) ions are smaller than the neutral atom. since chlorine gains an electron it is an (-) ion and it's radius increases answer is (4)... let me… [cont.]
Answered by m w - Tue Jan 6 16:43:21 2009
Q. When an atom of chlorine forms an ionic bond with an atom of sodium, the atom of chlorine 1. loses an electron 2. loses a proton 3. becomes an ion with a smaller radius than the atom of chlorine 4. becomes an ion with a larger radius than the atom of chlorine What is the approximate percent by mass of oxygen in SO3? 1. 20% 2. 40% 3. 60% 4. 80% Lithium and potassium have similar chemical properties because the atoms of both elements have the same 1. mass number 2. atomic number 3. number of electron shells 4. number of valence electrons The chemical formula for nickel (II) bromide is 1. Ni2Br 2. NiBr2 3. N2Br 4. NBr2 The nucleus of an atom of cobalt-58 contains 1. 27 protons… [cont.]
Asked by Paige S - Tue Jan 6 16:23:48 2009 - - 2 Answers - 0 Comments
A. Question 1... answer is choice 4 Question 2... answer is choice 3 Question 3... answer is choice 4 Question 4... answer is choice 2 Question 5... answer is choice 1 *** #1 chlorine gains an electron, sodium loses one. If it lost a proton, it wouldn't be chlorine anymore and the reaction would be nuclear. not chemical.. anyway the first two choices are not correct...that leaves the second two... when an atom becomes an ion, it's radius changes. if it gains an electron, it's radius increases. if it loses one, it's radius decreases... meaning (-) ions are larger than the neutral atom and (+) ions are smaller than the neutral atom. since chlorine gains an electron it is an (-) ion and it's radius increases answer is (4)... let me… [cont.]
Answered by m w - Tue Jan 6 16:43:21 2009
Chemistry, PLEASE HELP!?
Q. I just want to say that I'd be truly thankful if you could just help me out with my little assignment. I'm exhausted! I've been doing ALOT of makeup homework because I went to the hospital for a few days. 1.) Which element is the most abundant on earth? Water, (H2O) Oxygen, (O2) Hydrogen, (H2) None of the above 2.) Oxygen is a diatomic element which means that 2 atoms of oxygen combine to form an oxygen molecule, (O2). The number 2 in (O2) means that this oxygen molecule has ___. two atoms of oxygen two atoms of water two atoms of hydrogen none of the above 3.) Water, (H2O), contains Oxygen and Hydrogen. The oxygen in water, (H2O) does not have a subscript, which means 1 is understood and there is only 1… [cont.]
Asked by Tia Sunflower. - Tue Sep 8 18:12:28 2009 - - 1 Answers - 0 Comments
A. 1. Hydrogen, it makes up both water and air. 2. Two atoms of oxygen 3. 2 4. Nitrogen 5. Nitrogen N2 6. 2 7. 3 8. 2NaCl 9. 3 10. 5 11. O2 is a gas 12 10
Answered by Clumbo - Tue Sep 8 18:20:35 2009
Q. I just want to say that I'd be truly thankful if you could just help me out with my little assignment. I'm exhausted! I've been doing ALOT of makeup homework because I went to the hospital for a few days. 1.) Which element is the most abundant on earth? Water, (H2O) Oxygen, (O2) Hydrogen, (H2) None of the above 2.) Oxygen is a diatomic element which means that 2 atoms of oxygen combine to form an oxygen molecule, (O2). The number 2 in (O2) means that this oxygen molecule has ___. two atoms of oxygen two atoms of water two atoms of hydrogen none of the above 3.) Water, (H2O), contains Oxygen and Hydrogen. The oxygen in water, (H2O) does not have a subscript, which means 1 is understood and there is only 1… [cont.]
Asked by Tia Sunflower. - Tue Sep 8 18:12:28 2009 - - 1 Answers - 0 Comments
A. 1. Hydrogen, it makes up both water and air. 2. Two atoms of oxygen 3. 2 4. Nitrogen 5. Nitrogen N2 6. 2 7. 3 8. 2NaCl 9. 3 10. 5 11. O2 is a gas 12 10
Answered by Clumbo - Tue Sep 8 18:20:35 2009
Stoichiometry help! Please. ASAP?
Q. PLease show me all the work 1.Sodium metal and chlorine gas to form solid sodium chloride. Write the balanced chemical reaction and show each chemical formula. 2. Using the eqution for the synthesis of sodium chloride from its elements, calculate the amount ( in moles) of sodium chloride that can be produced from 0.500 moles of sodium
Asked by Roma Z - Sun Oct 26 17:59:37 2008 - - 1 Answers - 0 Comments
A. 2Na + Cl2 ===> 2NaCl 0.500molNa x 2molNaCl/2molNa = 0.500 mole NaCl
Answered by steve_geo1 - Sun Oct 26 18:12:35 2008
Q. PLease show me all the work 1.Sodium metal and chlorine gas to form solid sodium chloride. Write the balanced chemical reaction and show each chemical formula. 2. Using the eqution for the synthesis of sodium chloride from its elements, calculate the amount ( in moles) of sodium chloride that can be produced from 0.500 moles of sodium
Asked by Roma Z - Sun Oct 26 17:59:37 2008 - - 1 Answers - 0 Comments
A. 2Na + Cl2 ===> 2NaCl 0.500molNa x 2molNaCl/2molNa = 0.500 mole NaCl
Answered by steve_geo1 - Sun Oct 26 18:12:35 2008
Chemistry help!????? ?
Q. I need help with these problems. Please write the answer and explain how you got it or show how you got it. Thank you :) 1. A chemist uses an experiment similar to Experiment 3.2 to decompose 150.0 grams of water (H20). If a chemist finds that he makes 16.7 g of hydrogen from the decompostion, how much oxygen must he have produced? 2. A compound is decomposed into its constituent elements of carbon, nitrogen, and hydrogen. If, in the decomposition, 12.0 g of carbon, 14.0 g of carbon, 14.0 of nitrogen, and 3 g of hydrogen were formed, what was the mass of the compound before it was decomposed? 3. Identify the following as metal or nonmetal: I, Y, N, Re (elements) 4. In an experiment to make hydrogen peroxide, a chemist mixes 20.0 grams… [cont.]
Asked by kellsey - Wed Sep 17 02:08:10 2008 - - 1 Answers - 0 Comments
A. 5. First, a balanced eqtn: 3Ca + N2 -> Ca3N2 Convert 100 g Ca to moles (about 2.5) Convert 100 g of N2 to moles.(about 3.5) The problem's statement implies that Ca is the limiting reagent. The amount of Ca3N2 that would have been produced is 0.83 moles which does not correspond exactly to 152.5 grams of product, but we'll go along for the fun. To make a kg of product, we need [1000/152.5]x100 g of calcium. Now we can divide 1000 g by its mol wt to get the moles of product. The chem rxn tells us that each mole of product requires one mole of N2. So we can compute the moles of N2 needed, and from that, the mass. 9. The compounds are Sulfur trioxide, diphosphorus hexahydride (a common name would be diphosphine),… [cont.]
Answered by cattbarf - Wed Sep 17 02:36:49 2008
Q. I need help with these problems. Please write the answer and explain how you got it or show how you got it. Thank you :) 1. A chemist uses an experiment similar to Experiment 3.2 to decompose 150.0 grams of water (H20). If a chemist finds that he makes 16.7 g of hydrogen from the decompostion, how much oxygen must he have produced? 2. A compound is decomposed into its constituent elements of carbon, nitrogen, and hydrogen. If, in the decomposition, 12.0 g of carbon, 14.0 g of carbon, 14.0 of nitrogen, and 3 g of hydrogen were formed, what was the mass of the compound before it was decomposed? 3. Identify the following as metal or nonmetal: I, Y, N, Re (elements) 4. In an experiment to make hydrogen peroxide, a chemist mixes 20.0 grams… [cont.]
Asked by kellsey - Wed Sep 17 02:08:10 2008 - - 1 Answers - 0 Comments
A. 5. First, a balanced eqtn: 3Ca + N2 -> Ca3N2 Convert 100 g Ca to moles (about 2.5) Convert 100 g of N2 to moles.(about 3.5) The problem's statement implies that Ca is the limiting reagent. The amount of Ca3N2 that would have been produced is 0.83 moles which does not correspond exactly to 152.5 grams of product, but we'll go along for the fun. To make a kg of product, we need [1000/152.5]x100 g of calcium. Now we can divide 1000 g by its mol wt to get the moles of product. The chem rxn tells us that each mole of product requires one mole of N2. So we can compute the moles of N2 needed, and from that, the mass. 9. The compounds are Sulfur trioxide, diphosphorus hexahydride (a common name would be diphosphine),… [cont.]
Answered by cattbarf - Wed Sep 17 02:36:49 2008
i need help! will anyone help me?
Q. 1. Because water molecules are polar and carbon dioxide molecules are nonpolar, ___. (1 point) water has a lower boiling point than carbon dioxide does attractions between water molecules are weaker than attractions between carbon dioxide molecules carbon dioxide cannot exist as a solid water has a higher boiling point than carbon dioxide does 2. The elements most likely to form more than one type of ion are the ___. (1 point) transition metals alkali metals halogens alkaline earth metals 3. Fluorine, F, forms a binary ionic compound with lithium, Li. What is the name of this compound? (1 point) fluorine lithide lithium fluoride lithium fluorine fluorine lithium 4. Alkali metals, alkaline earth metals, and aluminum all form ions… [cont.]
Asked by Samatha - Mon Nov 9 17:48:39 2009 - - 1 Answers - 0 Comments
Q. 1. Because water molecules are polar and carbon dioxide molecules are nonpolar, ___. (1 point) water has a lower boiling point than carbon dioxide does attractions between water molecules are weaker than attractions between carbon dioxide molecules carbon dioxide cannot exist as a solid water has a higher boiling point than carbon dioxide does 2. The elements most likely to form more than one type of ion are the ___. (1 point) transition metals alkali metals halogens alkaline earth metals 3. Fluorine, F, forms a binary ionic compound with lithium, Li. What is the name of this compound? (1 point) fluorine lithide lithium fluoride lithium fluorine fluorine lithium 4. Alkali metals, alkaline earth metals, and aluminum all form ions… [cont.]
Asked by Samatha - Mon Nov 9 17:48:39 2009 - - 1 Answers - 0 Comments
PLEASE 10 questions need help i answerd the other 21?
Q. the questions actually go 2 3 9 10 12 14 18 20 25 29 1. Study the electron dot diagrams for lithium, carbon, fluorine, and neon in Figure 6-1. Choose the statement that correctly identifies the most stable of the elements. (1 point) Lithium is the most stable element because it has to lose only one electron to achieve a stable configuration. Carbon is the most stable element because it can form four bonds. Fluorine is the most stable element because it has to gain only one electron to achieve a stable configuration. Neon is the most stable element because its highest occupied energy level is filled. 2. The formation of an ionic bond invloves the ___. (1 point) transfer of electrons transfer of neutrons transfer of protons sharing… [cont.]
Asked by Hatchetwarrior584 - Mon Nov 2 11:02:03 2009 - - 3 Answers - 0 Comments
A. there isnt 21 questions on this test :/
Answered by OneSmartCookie - Thu Nov 5 18:42:21 2009
Q. the questions actually go 2 3 9 10 12 14 18 20 25 29 1. Study the electron dot diagrams for lithium, carbon, fluorine, and neon in Figure 6-1. Choose the statement that correctly identifies the most stable of the elements. (1 point) Lithium is the most stable element because it has to lose only one electron to achieve a stable configuration. Carbon is the most stable element because it can form four bonds. Fluorine is the most stable element because it has to gain only one electron to achieve a stable configuration. Neon is the most stable element because its highest occupied energy level is filled. 2. The formation of an ionic bond invloves the ___. (1 point) transfer of electrons transfer of neutrons transfer of protons sharing… [cont.]
Asked by Hatchetwarrior584 - Mon Nov 2 11:02:03 2009 - - 3 Answers - 0 Comments
A. there isnt 21 questions on this test :/
Answered by OneSmartCookie - Thu Nov 5 18:42:21 2009
From Yahoo Answer Search: 'chemical formula of the element chlorine'
Wed Nov 11 06:35:10 2009 [ refresh local cache ]
