Please help with this chem homework?
Q. What are the chemical names for these formulas? Cu2O Al(ClO3)3 Na3PO4 How about the correct formula for these names: aluminum bromide dinitrogen oxide magnesium chromate chromium (III) phosphate lead (IV) sulfite. Thanks so much.
Asked by Tam - Mon Mar 23 20:27:46 2009 - - 1 Answers - 0 Comments
Q. What are the chemical names for these formulas? Cu2O Al(ClO3)3 Na3PO4 How about the correct formula for these names: aluminum bromide dinitrogen oxide magnesium chromate chromium (III) phosphate lead (IV) sulfite. Thanks so much.
Asked by Tam - Mon Mar 23 20:27:46 2009 - - 1 Answers - 0 Comments
Please help with my chemistry?
Q. What are the chemical names for these formulas? Cu2O Al(ClO3)3 Na3PO4 How about the correct formula for these names: aluminum bromide dinitrogen oxide magnesium chromate chromium (III) phosphate lead (IV) sulfite. Thanks so much.
Asked by Tam - Mon Mar 23 20:41:17 2009 - - 2 Answers - 0 Comments
Q. What are the chemical names for these formulas? Cu2O Al(ClO3)3 Na3PO4 How about the correct formula for these names: aluminum bromide dinitrogen oxide magnesium chromate chromium (III) phosphate lead (IV) sulfite. Thanks so much.
Asked by Tam - Mon Mar 23 20:41:17 2009 - - 2 Answers - 0 Comments
Please help: lewis structures, balancing chemical equations, VSEPR theory.?
Q. I need help with these problems on my chemistry review! I know it's alot, but please do whatever u can the best u can. I typed all of the numbers regular size for ex. O2. They are supposed to be smaller and lower, (idk what u call it I was thinkin exponents but exponents are in the upper right hand corner but anyway u know what I mean). Please bare with me! Especially on the lewis structures. Draw Lewis Structures for each of the following molecules: O2 N2 CO SO2 Draw a Lewis structure for each of the following, and then use VSEPR theory to predict the molecular geometry of each: SCl2 PI3 CL2O NH2CL SiCl3Br ONCl Write formulas for each of the following compounds: Potassium Hydroxide Calcium Nitrate Sodium Carbonate Carbon… [cont.]
Asked by Reesie - Tue Apr 21 22:07:34 2009 - - 1 Answers - 0 Comments
A. Visit these sites to learn more about chemistry formulas and concepts that can help you in regards to your problem:
Answered by Bawan - Sat Apr 25 20:33:29 2009
Q. I need help with these problems on my chemistry review! I know it's alot, but please do whatever u can the best u can. I typed all of the numbers regular size for ex. O2. They are supposed to be smaller and lower, (idk what u call it I was thinkin exponents but exponents are in the upper right hand corner but anyway u know what I mean). Please bare with me! Especially on the lewis structures. Draw Lewis Structures for each of the following molecules: O2 N2 CO SO2 Draw a Lewis structure for each of the following, and then use VSEPR theory to predict the molecular geometry of each: SCl2 PI3 CL2O NH2CL SiCl3Br ONCl Write formulas for each of the following compounds: Potassium Hydroxide Calcium Nitrate Sodium Carbonate Carbon… [cont.]
Asked by Reesie - Tue Apr 21 22:07:34 2009 - - 1 Answers - 0 Comments
A. Visit these sites to learn more about chemistry formulas and concepts that can help you in regards to your problem:
Answered by Bawan - Sat Apr 25 20:33:29 2009
chemistry help?
Q. what are the names of these compounds using the stock system (b) CrF2 (c) Fe(OH)2 (d) MgO (e) Fe2O3 (f) AgNO3 (g) LiBr (h) FePO4 (i) Sn(NO3)2 Write the chemical formula for the following compounds. (a) strontium bromide (b) potassium hydride (c) vanadium(V) oxide (d) aluminum fluoride
Asked by jason t - Mon Dec 10 21:59:04 2007 - - 2 Answers - 0 Comments
A. (b) CrF2 = chromium(II) difluoride (c) Fe(OH)2 = ferrous hydroxide / iron (II) hydroxide (compounds containing Fe^2+ are called ferrous compounds, the ones with Fe^3+ are called Ferric compounds) (d) MgO = magnesium oxide (e) Fe2O3 = ferric oxide / iron (III) oxide (f) AgNO3 = silver nitrate (g) LiBr = lithium bromide (h) FePO4 = iron (III) phosphate (i) Sn(NO3)2 = tin nitrate (a) strontium bromide = SrBr2 (strontium = Sr^2+ ; bromide = Br^-) (b) potassium hydride = KH (potassium = K^+ ; hydride = H^-) (c) vanadium(V) oxide = V2O5. (vanadium (V) = V^5+ ; oxide = O^2-) (d) aluminum fluoride= AlF3 (alumnium = Al^3+ ; fluoride = F^-) Hope this helps:D
Answered by kodie - Mon Dec 10 22:15:44 2007
Q. what are the names of these compounds using the stock system (b) CrF2 (c) Fe(OH)2 (d) MgO (e) Fe2O3 (f) AgNO3 (g) LiBr (h) FePO4 (i) Sn(NO3)2 Write the chemical formula for the following compounds. (a) strontium bromide (b) potassium hydride (c) vanadium(V) oxide (d) aluminum fluoride
Asked by jason t - Mon Dec 10 21:59:04 2007 - - 2 Answers - 0 Comments
A. (b) CrF2 = chromium(II) difluoride (c) Fe(OH)2 = ferrous hydroxide / iron (II) hydroxide (compounds containing Fe^2+ are called ferrous compounds, the ones with Fe^3+ are called Ferric compounds) (d) MgO = magnesium oxide (e) Fe2O3 = ferric oxide / iron (III) oxide (f) AgNO3 = silver nitrate (g) LiBr = lithium bromide (h) FePO4 = iron (III) phosphate (i) Sn(NO3)2 = tin nitrate (a) strontium bromide = SrBr2 (strontium = Sr^2+ ; bromide = Br^-) (b) potassium hydride = KH (potassium = K^+ ; hydride = H^-) (c) vanadium(V) oxide = V2O5. (vanadium (V) = V^5+ ; oxide = O^2-) (d) aluminum fluoride= AlF3 (alumnium = Al^3+ ; fluoride = F^-) Hope this helps:D
Answered by kodie - Mon Dec 10 22:15:44 2007
need help with these questions?
Q. . Compare the properties of a solid, a liquid, and a gas. 2. Give me an example of a physical change and a chemical change. 3. Describe how an ionic compound forms. How does a covalent molecule form? 4. What is the density of water? 5. What is meant by the statement "like dissolves like?" 6. Name the following compounds: a) MgO b) NaCl c) K2CO3 7. What is the formula for the following compounds: a) lithium bromide b) calcium oxide c) aluminum sulfide 8. Is burning paper an endothermic or exothermic reaction? What about photosynthesis? 9. Why is water used as a coolant in the radiator of your family car? 10. What are the three units used to measure temperature? 11. How much heat is required to raise 100ml of water from 20 degrees… [cont.]
Asked by netta0610 - Tue Jun 23 15:13:42 2009 - - 2 Answers - 0 Comments
A. 1. solids - constant shape and volume liquids - shape of container, constant volume gas - shape and volume of container 2. physical, ice melting chemical - paper burning 3. Ionic - electrons are transfered making positive and negative ions which stick together because of opposite charges, Covalent - electrons are shared between the atoms 4. 1 gram per mL 5. nonpolar substances disolve in nonpolar solvents whereas polar substances will dissolve in polar solvents 6. magnesium oxide sodium chloride potassium carbonate 7. LiBr CaO Al2S3 8. exothermic, endothermic 9. has high specific heat capacity 4.19J/gC 10. celcius, farenheit, Kelvin 11. 100 x 80 x 4.19 = ??? Joules 12. electrons in the outermost shell 13. 6, 7, 1 14.… [cont.]
Answered by Ted - Tue Jun 23 15:38:53 2009
Q. . Compare the properties of a solid, a liquid, and a gas. 2. Give me an example of a physical change and a chemical change. 3. Describe how an ionic compound forms. How does a covalent molecule form? 4. What is the density of water? 5. What is meant by the statement "like dissolves like?" 6. Name the following compounds: a) MgO b) NaCl c) K2CO3 7. What is the formula for the following compounds: a) lithium bromide b) calcium oxide c) aluminum sulfide 8. Is burning paper an endothermic or exothermic reaction? What about photosynthesis? 9. Why is water used as a coolant in the radiator of your family car? 10. What are the three units used to measure temperature? 11. How much heat is required to raise 100ml of water from 20 degrees… [cont.]
Asked by netta0610 - Tue Jun 23 15:13:42 2009 - - 2 Answers - 0 Comments
A. 1. solids - constant shape and volume liquids - shape of container, constant volume gas - shape and volume of container 2. physical, ice melting chemical - paper burning 3. Ionic - electrons are transfered making positive and negative ions which stick together because of opposite charges, Covalent - electrons are shared between the atoms 4. 1 gram per mL 5. nonpolar substances disolve in nonpolar solvents whereas polar substances will dissolve in polar solvents 6. magnesium oxide sodium chloride potassium carbonate 7. LiBr CaO Al2S3 8. exothermic, endothermic 9. has high specific heat capacity 4.19J/gC 10. celcius, farenheit, Kelvin 11. 100 x 80 x 4.19 = ??? Joules 12. electrons in the outermost shell 13. 6, 7, 1 14.… [cont.]
Answered by Ted - Tue Jun 23 15:38:53 2009
Chemistry Multiple Choice Questions Help?
Q. 1.) If 63.5 g of copper (Cu) combine with 16 g of oxygen (O) to form the compound CuO, how many grams of oxygen will be needed to combine with the same amount of copper to form the compound CuO2? a.16 gc.64 g b.32 gd.127 g 2.) An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is a.13.c.27. b.14.d.40. 3.) Ag-109 has 62 neutrons. The neutral atom has a.40 electrons.c.53 electrons. b.47 electrons.d.62 electrons. 4.) Chlorine has atomic number 17 and mass number 35. It has a.17 protons, 17 electrons, and 18 neutrons. b.35 protons, 35 electrons, and 17 neutrons. c.17 protons, 17 electrons, and 52 neutrons. d.18 protons, 18 electrons, and 17 neutrons. 5.) The atomic number of neon is 10. The atomic… [cont.]
Asked by AP Chem - Fri Aug 7 10:45:56 2009 - - 2 Answers - 0 Comments
A. First off, i ain't double checking. If it's right, then good. anyway, here we go. (For any i don't know, I'll say pass) 1) B. It's 2 moles of oxygen. 2) C. Mass number is protons + neutrons. 3) B. I'm pretty sure that in an isotope, proton numbers remain constant. therefore, to remain neutral, the electrons must number the same. 4) A. simple. 5) C. Avogadro's constant states that there will be 6.022 x 10^23 atoms in any given mole of substance, and that the mole of said substance is the total atomic weight in grams. Therefore, i doesn't matter which elements were picked. the atom count remains the same. 6) C. Read above statement. 7) C. it is found by dividing the mass of substance (m) over the molar mass of substance (M). it… [cont.]
Answered by Gregory - Fri Aug 7 11:55:33 2009
Q. 1.) If 63.5 g of copper (Cu) combine with 16 g of oxygen (O) to form the compound CuO, how many grams of oxygen will be needed to combine with the same amount of copper to form the compound CuO2? a.16 gc.64 g b.32 gd.127 g 2.) An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is a.13.c.27. b.14.d.40. 3.) Ag-109 has 62 neutrons. The neutral atom has a.40 electrons.c.53 electrons. b.47 electrons.d.62 electrons. 4.) Chlorine has atomic number 17 and mass number 35. It has a.17 protons, 17 electrons, and 18 neutrons. b.35 protons, 35 electrons, and 17 neutrons. c.17 protons, 17 electrons, and 52 neutrons. d.18 protons, 18 electrons, and 17 neutrons. 5.) The atomic number of neon is 10. The atomic… [cont.]
Asked by AP Chem - Fri Aug 7 10:45:56 2009 - - 2 Answers - 0 Comments
A. First off, i ain't double checking. If it's right, then good. anyway, here we go. (For any i don't know, I'll say pass) 1) B. It's 2 moles of oxygen. 2) C. Mass number is protons + neutrons. 3) B. I'm pretty sure that in an isotope, proton numbers remain constant. therefore, to remain neutral, the electrons must number the same. 4) A. simple. 5) C. Avogadro's constant states that there will be 6.022 x 10^23 atoms in any given mole of substance, and that the mole of said substance is the total atomic weight in grams. Therefore, i doesn't matter which elements were picked. the atom count remains the same. 6) C. Read above statement. 7) C. it is found by dividing the mass of substance (m) over the molar mass of substance (M). it… [cont.]
Answered by Gregory - Fri Aug 7 11:55:33 2009
PLEASE!!! I need some help trying to figure out these chemestry equations! PLEASE HELP! EASY 10 points!!?
Q. Directions: write balanced equations for the reactions for the following equations. 1. Solutions of sulfuric acid and sodium hydroxide are mixed. 2. Calcium carbonate is added to a test tube and heated. 3. Aqueous chlorine is added to a solution of sodium bromide. 4. Zinc metal is added to hydrochloric acid solution. 5. Lithium metal is added to water. 6. Aluminum foil is added to a solution of copper (II) chloride. 7. Solutions of hydrochloric acid and potassium hydroxide are mixed. 8. What is the name and formula of the precipitate formed when solutions of potassium phosphate and barium nitrate are mixed? Write the net ionic equation. Please!!! I neeed help doing these!! And please say for each thing what type of chemical… [cont.]
Asked by Mumble - Sat Mar 13 13:52:31 2010 - - 1 Answers - 0 Comments
Q. Directions: write balanced equations for the reactions for the following equations. 1. Solutions of sulfuric acid and sodium hydroxide are mixed. 2. Calcium carbonate is added to a test tube and heated. 3. Aqueous chlorine is added to a solution of sodium bromide. 4. Zinc metal is added to hydrochloric acid solution. 5. Lithium metal is added to water. 6. Aluminum foil is added to a solution of copper (II) chloride. 7. Solutions of hydrochloric acid and potassium hydroxide are mixed. 8. What is the name and formula of the precipitate formed when solutions of potassium phosphate and barium nitrate are mixed? Write the net ionic equation. Please!!! I neeed help doing these!! And please say for each thing what type of chemical… [cont.]
Asked by Mumble - Sat Mar 13 13:52:31 2010 - - 1 Answers - 0 Comments
From Yahoo Answer Search: 'what is the chemical formula for aluminum bromide'
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