Chemical formula 4 these ionic compounds. copper(I) Carbonate, Chromium(III)Phosphide, Silver Nitride?
Q. Also these please, Lithium sulfide, Mercury (I) phosphate. Potassium Sulfate, Chromium(II) Chlorate, Ammomium Carbonate, Aluminum Dichromate, Nickle II Chloride, Magnesium Phosphite, Iron (III) iodide, Mercury II Cyanide, Copper II Hydroxide, Potassium Carbonate, Barium Nitrite.
Asked by pitsteelerfan1236 - Thu Jan 10 19:04:02 2008 - - 2 Answers - 0 Comments

A. If you're in a chemistry class, a chart of polyatomic ions should be in your book, or a handout given by the teacher. The thing to do is look up the names of the ions in the chart, and best is to memorize them. Then balance their charges with the charges of the other ions, which are mainly metals in your list above. There are rules that indicate what the metallic ions' charges are--for instance, in the group #1, their charges will be +1. Hope this helps you learn at least a bit on how to do these. Feel free to reply if you need more advice on how to do these.
Answered by Former MN Science Teacher --sDg - Thu Jan 10 19:14:56 2008

writing chemical formula!?
Q. how would you write the chemical formula for...3 chromium ions and 2 phosphate ions? how about 2 sodium and 1 carbonate? any help would be greatly appreciated! thanks
Asked by 6969 - Tue Feb 10 02:22:48 2009 - - 2 Answers - 0 Comments

A. Cr3(PO4)2 Na2CO3
Answered by wahahaha - Tue Feb 10 02:42:28 2009

Chemical Formula and Name?
Q. I need the chemical formula as well as the name of the following : Thank you :) 1. For the compound that results when calcium and sulfate ion react 2. For the compound that results when iron III and carbonate ions react. 3. For the compound that results when chromium VI reacts with oxygen.
Asked by mimi - Thu Mar 8 11:23:30 2007 - - 3 Answers - 0 Comments

A. 1) Ca+2 + SO-2 --> CaSO4 ==> calcium sulfate 2) 2Fe+3 + 3CO3-2 --> Fe2(CO3)3 ==> iron(III) carbonate 3) Cr+4 + 2O2 --> CrO2 ==> chromium oxide
Answered by Dr Dave P - Thu Mar 8 11:32:01 2007

Give the chemical formula for each of the following ionic compounds.?
Q. chromium(III) carbonate potassium chromate sodium dihydrogen phosphate iron(III) cloride mercury(I) bromide Name the following compounds. Cu(ClO4)2 The radius of the chromium (Cr) atom is about 1.9 A (a) Express this distance in nanometers (nm). (b) How many chromium (Cr) atoms would have to be lined up to span 1.0 mm? (c) If the atom is assumed to be a sphere, what is the volume in cm3 of a single chromium (Cr) atom?
Asked by Cynthia - Sun May 25 19:34:57 2008 - - 3 Answers - 0 Comments

A. Cr2(CO3)3 K2CrO4 NaH2PO4 FeCl3 HgBr copper (II) perchlorate
Answered by science teacher - Sun May 25 19:44:41 2008

I need some help with some chemistry problems that I can figure out.. Please help me...?
Q. Im sorry for asking for so much but I just dont know any of these. 1. Find the change of the cadmium cation in cadmium bromide, CdBr2, Explain. 2. A mole of a certain compound contains 207.2 grams of lead and 32.00 grams of oxygen. Without doing any calculations, tell weather a formula unit of the compound contains more atoms of lead or more atoms of oxygen/ Explain. 3. Determine the chemical formulas for the following ionic compound: A. Magnesium sulfate B. Rubidum bromide C. Chromium (II) fluoride D. Nickle (I) carbonate 4. What is the empirical formula of a compound that contains 4.03 grams of hydrogen per mole, 64.14 grams of sulfur per mole, and 128.00 grams of oxygen per mole? Thank you so much for the help!!
Asked by Amanda Marie - Tue Mar 10 17:57:13 2009 - - 1 Answers - 0 Comments

chemistry homework...help!?
Q. what is the chemical formula? 3. Barium oxide ___ 4. Calcium sulfate ___ 5. Potassium sulfide ___ 6. Silver nitrate ___ 7. Iron(III) nitrite ___ 8. Strontium acetate ___ 9. Chromium bromide ___ 10. Magnesium chloride ___ 11. Tin(II) carbonate ___ 12. Calcium cyanide ___ 13. Barium phosphate ___ 14. Lead(II) oxide ___ 15. Cobalt(II) sulfate ___ 16. Potassium dichromate ___ 17. Ammonium chromate ___ 18. Iron(II) oxide ___ thank you! thank you. how did you do that?
Asked by Get it girrrl! - Thu Oct 30 17:40:02 2008 - - 1 Answers - 0 Comments

Chemistry Question--->nomenclatu re help :)?
Q. 1)napthalene does not dissolve in water, and melts at 85 degrees celcius, what category of compound is it? a)ionic b)polar covalent c)non-polar covalent d)physical e)analytical well i think i cant be ionic cuz ionic compound has a high melting and boiling point. i dunno abt the rest.. and i know covalent has low melting and boiling point... 2)Which chemical would be the best substance to eat for someone with too much sodium in their diet? (consider just the formulas) a)sodium phosphate b)sodium carbonate c)sodium sulfate d)sodium chloride e)sodium oxide i dun get why if u eat too much sodium, then why all of the answer have sodium in it? 3)how many total electrons are present in 1 molecule of carbon tetraflouride a)6 b)9 c)46 d)42 e)im [cont.]
Asked by Babi B - Wed Oct 22 21:16:00 2008 - - 1 Answers - 0 Comments

A. 1c non-polar does not dissolve in water 2 I do not get it too, maybe the answer in anion? carbonate is the safest 3 you are correct 4 silver (I) iodate, you can omit (I) and call it simply silver iodate 5 liquid or not does not matter for naming, so your name is correct 6. again, what chromium (I) or (III)? hypo means the least oxidation state for oxigen containg acid, so it is OI- I would say Cr(OI)3 cuz i do not think CrOI is stable
Answered by Anatol - Thu Oct 23 18:04:57 2008

Chemistry help, please?
Q. =0 So yea. Me and chemistry, have a restraining order. We don't get along too well... help? 1. For reasons of taste, the maximum chloride ion, Cl-, content of drinking water is set at 0.25 g per liter. How many chloride ions is this per liter? (Atomic weight: Cl = 35.45). Answers: 1.6 x 1023 1.6 x 1022 4.2 x 1021 4.2 x 1022 2. How many moles of nickel are in 1 mole of nickel(II) sulfate? Answers: 1 2 6.02 X 1023 3 X 1023 3. What is the percent composition of oxygen in Li2O? Answers: 46.4% 53.6% 66.6% 33.3% 4. What is the empirical formula of a compound that is 43% carbon and 57% oxygen? Answers: CO C2O CO2 C3O3 5. What are the products of the following reaction? Cu + AgNO3 ---> Answers: CuAg2 + NO3 Cu(NO3)2 + Ag Cu(AgNO3)2… [cont.]
Asked by Kitt - Fri Dec 28 12:42:06 2007 - - 2 Answers - 0 Comments

A. 1.Moles Cl- = 0.25 / 35.453 = 0.00705 Number of ions = 0.00705 x 6,02 x 10^23 =4.2 x 10^21 2.The formula is NiSO4 so there is 1 mole of Ni 3.The molar mass is : ( 6.941 x 2 ) + 16 = 29.88 g/mol % of oxigen = 16 x 100 / 29.88 =53.6 4.Moles C = 43 / 12 =3.58 Moles O = 57 / 16 = 3.56 The ratio is 1 : 1 and the formula is CO 5.Cu(NO3)2 + Ag 6. the first 7. 2 8.Moles KClO3 = 2.00 / 122.55 g/mol =0.0163 Moles O2 =0.0163 x 3 / 2 = 0.0245 Grams O2 = 0.0245 x 32 g/mol = 0.78 g 9. 2Cr(ClO4)3 +3 K2CO3 >> Cr2(CO3)3+ 6KClO4 is the balanced equation Moles K2CO3 = 10.0 / 138.2 =0.0724 Moles Cr2(CO3)3 = 0.0724 / 3 = 0.0241 Grams = 284 g/mol x 0.0241 mol = 6.9 g 10. the ratio between Cr(ClO4)3 and K2CO3 is 2 : 3 K2CO3 is the limiting reactant
Answered by Dr.A - Fri Dec 28 12:58:15 2007

Physical Science Help!!!?
Q. 1. How many grams of HNO3 are in 2.6 mol of the compound? * 24.2 g * 63.0 g * 93.0 g * 163.8 g 2. Which of the following is NOT always true about a synthesis reaction? * One product is formed. * There is only one reactant. * The general formula is A + B C. * A reactant might be a compound, or it might be an element. 3. How many atoms are present in 2 moles of chromium? * 6.02 x 1023 atoms * 6.02 x 1024 atoms * 1.20 x 1023 atoms * 1.20 x 1024 atoms 4. Which of the following is a chemical equation that accurately represents what happens when sulfur and oxygen react to form sulfur trioxide? * S and O form SO3 * S and O2 produce SO3 * S + O2rightarrow SO3 * 2S + 3O2rightarrow… [cont.]
Asked by James - Fri Nov 20 02:16:32 2009 - - 1 Answers - 0 Comments

A. 1. How many grams of HNO3 are in 2.6 mol of the compound? with a molar mass of 63 g/mol, 2.6 moles of HNO3 = * 163.8 g === 2. Which of the following is NOT always true about a synthesis reaction? * One product is formed.. === 3. How many atoms are present in 2 moles of chromium? @ 6.02 e23 particles /mole: your answer is * 1.20 x 10^24 atoms === 4. Which of the following is a chemical equation that accurately represents what happens when sulfur and oxygen react to form sulfur trioxide? * 2S + 3O2 --> 2SO3 === 5. An industrial process makes calcium oxide by decomposing calcium carbonate. Which of the following is NOT needed to calculate the mass of calcium oxide that can be produced from 4.7 kg of calcium carbonate? * the volume… [cont.]
Answered by Steve O - Fri Nov 20 13:09:53 2009

Chemistry problems! i really need help!! =/ pleasssse?
Q. so i have a chem paper due in a day and I dont get any of this! please please please help! best answer gets 10 points! thanks! 32.dentify each of the following compounds as a strong electrolyte, weak electrolyte, or nonelectrolyte. a. CH3OH (methanol) ___ b. CH3COOH ___ c. KNO3 ___ d. NH3 ___ e. NH4Cl ___ f. CaCO3 ___ 33.Combustion analysis of a 1.893 g sample of a compound produced 5.545 g of CO2 and 1.388 g H2O. The molar mass of the compound is 270.36 g/mol. If the compound contains carbon, hydrogen and oxygen only, determine the molecular formula of this compound. 34. A. What volume (in mL) of a 0.150 M HNO3 solution is required to completely react with 35.7 mL of a 0.108 M Na2CO3 solution according to the following balanced… [cont.]
Asked by tishu - Fri Nov 7 09:30:35 2008 - - 1 Answers - 0 Comments

A. ___Answers do not like to do all your work. We are here to answer they ones you have worked on, but have not been able to solve. email me which "ONE" of these has given you the most trouble and I will answer it. Here's 33 and 35 that show different techniques: 33.Combustion analysis of a 1.893 g sample of a compound produced 5.545 g of CO2 and 1.388 g H2O. The molar mass of the compound is 270.36 g/mol. If the compound contains carbon, hydrogen and oxygen only, determine the molecular formula of this compound. Let UNITs guide you; always use them in your calculation to prevent errors Firstly, the eqn: CxHyOz + wO2 ---> xCO2 + y/2 H2O ___1.893 g___5.545 g___1.388 g H2O moles C =5.545 g / MW CO2 g/mole = ?? ___g C in sample = moles… [cont.]
Answered by SciMann - Fri Nov 7 13:15:28 2008