Need help balancing this hard chemical equation!!!!!! CuCNS+KIO3+HCl --> HCN+CuSO4+ICl+H2O+KCl?
Q. Need help balancing this hard chemical equation!!! CuCNS+KIO3+HCl --> HCN+CuSO4+ICl+H2O+KCl?
Asked by loves sports - Wed Mar 19 23:18:44 2008 - - 1 Answers - 0 Comments

A. 4 CuCNS + 7 KIO3 + 14 HCl --> 4 HCN + 4 CuSO4 + 7 ICl + 5 H2O + 7 KCl
Answered by briee89 - Thu Mar 20 00:15:21 2008

How do would you balance these equations?
Q. CuSO4*5H2O ---> CuSO4 + H2O C8H18 + O2 ---> CO2 + H2O P2O5 + H2O ---> H3PO4 HN3 + Zn ---> Zn(NO3)2 + NO2 + H2O
Asked by SICK MY DUCK! - Wed Jan 24 01:03:19 2007 - - 2 Answers - 0 Comments

A. CuSO4*5(H2O) ---> CuSO4 + 5(H2O) 2(C8H18) + 25O2 ---> 16(CO2) + 18(H2O) P2O5 + 3(H2O) ---> 2(H3PO4) The last one doesn't balance because there is oxygen on the right side but none on the left.
Answered by Northstar - Wed Jan 24 01:13:36 2007

10 pt ? Please help me out?
Q. Molarity is defined as the concentration of solution expressed as moles of solute per liter of solution; abbreviated M. How many milliliters of 4.00 M H2SO4 are required to react with 1.60g of CuO? Balanced equation:CuO + H2SO4---CuSO4+H2O
Asked by turbo - Mon Nov 10 17:45:28 2008 - - 1 Answers - 0 Comments

A. Here's how you do this: how many moles of CuO does 1.60 grams represent. Cu = 63.55 g/M O = 16 g/M 79.55 g/M. In your case: 0.020 M. That's how much H2SO4 needed. You need 1/200 of a liter of 5 mL.
Answered by idealab25 - Mon Nov 10 17:52:14 2008

Chemical Equation Coefficients?
Q. When the formula equation Fe3O4 + Al ==> Al2O3 + Fe is correctly balanced, the coefficient of Fe is When the formula equation H2(g) + Cl2(g) ==> HCl(g) is correctly balanced, the coefficient of HCl is When the formula equation Zn(OH)2 + CH3COOH ==> Zn(CH3COO)2 + H2O is correctly balanced, the coefficient of Zn(CH3COO)2 is When the formula equation CuSO4(aq) + Fe(s) ==> Fe2(SO4)3(aq) + Cu(s) is correctly balanced, the coefficient of CuSO4(aq) is
Asked by SlashKT - Fri Jan 16 11:35:54 2009 - - 1 Answers - 0 Comments

A. The balanced equation is 3Fe3O4 + 8Al 4Al2O3 + 9Fe Therefore, the coefficient of Fe in the correctly balanced equation is 9. The balanced equation is H2(g) + Cl2(g) 2HCl (g) Thus, the coefficient of HCl in the correctly balanced equation is 2. The balanced equation is Zn(OH)2 + 2CH3COOH Zn(CH3COO)2 + 2H2O Thus the coefficient of Zn(CH3COO)2 in the correctly balanced equation is 1 The balanced equation is 3CuSO4(aq) + 2Fe(s) Fe2(SO4)3(aq) + 3Cu(s) Thus the coefficient of CuSO4 in the correctly balanced equation is 3.
Answered by somdyuti - Fri Jan 16 11:52:41 2009

what would this chemical equation be balanced??? please help!!!!?
Q. I have tried to balance this equation so many times and I can't get it!! please help!! here it is:: Cu + H SO + H O --> CuSO *5H O + SO please tell me as soon as possible!!!
Asked by ugsbyh - Thu Oct 15 18:01:53 2009 - - 2 Answers - 0 Comments

A. Cu + 2H SO + 3H O --> CuSO *5H O + SO That should be it
Answered by unknown - Thu Oct 15 18:06:21 2009

What are the completely balanced chemical equations for the following reactions?
Q. Hey sorry guys, last time I posted these questions, some you got mad thinking that I just want the answers. But, I ve actually tried. You guys can verify my answers... thanks.. (PS: I don t have rubber book so I don t know the right answers!) Please give balanced equations (include states of reatcants & products. Also, indicate oxidizing agent (OA) where redox reactions are applicable: 1) Burning Mg ribbon in O2. 2 Mg(s) + O2(g) 2MgO(s) (OA oxygen) 2) Combustion of elemental Phosphorus. P4(s) + 5 O2(g) P4O10(s) (OA oxygen) 3) Combustion of S. S(s) + O2(g) SO2(g) (OA oxygen) 4) Dissolving Cu in concentrated nitric acid. Cu(s) + 4 HNO3(aq) Cu(NO3)2(aq) + 2 NO2(g) + 2 H2O(l) (OA nitric acid) 5) Dissolving MgO in HCl acid.… [cont.]
Asked by Karan S - Sat Sep 30 18:11:53 2006 - - 3 Answers - 0 Comments

A. split the question up into 7 different ones and i promise you'll get your anwers...
Answered by Jacqueline - Sun Oct 1 00:39:35 2006

Balance equations please.?
Q. SiF4 + H2O ==> H2SiF6 + H2SiO3 C2H5OH + O2 ==> CO2 + H2O AgNO3 + MgCl2 ==> AgCl + Mg(NO3)2 BaCl2 + Na2SO4 ==> BaSO4 + NaCl Ce(IO3)4 + H2C2O4 ==> Ce2(C2O4)3 + I2 + CO2 + H2O IrCl3 + NaOH ==> Ir2O3 + HCl + NaCl PbCrO4 + HCl + FeSO4 ==> PbCl2 + Cr2(SO4)3 + FeCl3 + H2O + Fe2(SO4)3 KBr + H2SO4 + MnO2 ==> KHSO4 + MnSO4 + H2O + Br2 MoO3 + Zn + H2SO4 ==> Mo2O3 + ZnSO4 + H2O Cu2S + HNO3 ==> Cu(NO3)2 + CuSO4 + NO2 + H2O
Asked by systmlordansem - Fri Mar 13 21:25:58 2009 - - 3 Answers - 0 Comments

Balancing chemical equations?
Q. What are the solutions for balancing the following equations? These are a handful that have really stumped me. [put the number that you want to use to balance the equation in front of the equation/products/reactan ts you need to balance...] C6H14 + O2 --> CO2 + H2O Cu + H2SO4 --> CuSO4 + H2O + SO2 Ca(OH)2 + H3PO4 --> Ca3(PO4)2 + H2O i so knew the first one X__X Except for that 19 O2. Thanks, guys.
Asked by Anon - Mon Jan 12 22:03:02 2009 - - 2 Answers - 0 Comments

A. 2 C6H14 + 19 O2 --> 12 CO2 + 14 H2O Cu + 2 H2SO4 --> CuSO4 + 2 H2O + SO2 3 Ca(OH)2 + 2 H3PO4 --> Ca3(PO4)2 + 6 H2O
Answered by trikha - Mon Jan 12 22:10:48 2009

Why are the coefficients of a balanced chemical equation not directly interpreted on the of mass?
Q. Explain Why is mass a property of matter we can conveniently measure in the laboratory, 2.Explain why, in the balanced chemical equation C + O2 - CO2, we know that 1 g of C will not react exactly with 1 g of O2. 3.For each of the following reactions, give the balanced equation for the reaction and state the meaning of the equation in terms of numbers of individual molecules and in terms of moles of molecules. a.NOC?) + Oz(g) b.AgC2H3O2(a<7) + CuSO4(ag) - Ag2S04(5) + Cu(C2H302)2(^) c.PC13(/) + H2O(/) -* H3PO3(/) + HC1( ) d.C2H6( ) + C\2(g) -* C2H5C1( ) + HClfr) For each of the following reactions, give the balanced chemical equation for the reaction and state the meaning of the equation in terms of individual molecules and in terms… [cont.]
Asked by Skoolboy - Sun Apr 5 19:52:55 2009 - - 1 Answers - 0 Comments

A. i failed physical science lmfao is this chem=[
Answered by diaaa<3 - Sun Apr 5 20:16:23 2009

Is this equation balanced correctly?
Q. aqueous solutions of strontium nitrate and copper (II) sulphate pentahydrate are reacted. Sr(NO3)2 (aq) + CuSO4 . 5(H2O) (aq) -> SrSO4(s) + Cu(NO3)2 (aq) + 5(H2O) My friend tells me to leave out the H20 because it's aqueous, I'm not so sure. I'm supposed to (using stoichiometry) find the mass of SrSO4
Asked by Ali C - Sat Oct 3 20:26:06 2009 - - 1 Answers - 0 Comments

a couple of sceience questions thank you!?
Q. Which of the following is a synthesis reaction? 2 Mg + O2 2 MgO 2 H2O 2 H2 + O2 Cl2 + 2 KI I2 + 2 KCl NaOH + HCl NaCl + H2O Which of the following is a balanced equation? Al + CuSO4 Cu + Al2(SO4)3 2 Al + CuSO4 Cu + Al2(SO4)3 Al + 3 CuSO4 2 Cu + Al2(SO4)3 2 Al + 3 CuSO4 3 Cu + Al2(SO4)3 How many electrons does the first element in each period have in its outermost energy level? 1 2 4 8 The electrons in the outermost shell that an atom can gain, lose, or share with another atom are called __?__. stable electrons protons valence electrons In metallurgy, oxygen is removed from a compound by the process of __?__. reduction reaction subtractive synthesis ion exchange Groups of atoms that behave as though… [cont.]
Asked by Katie T - Mon Jun 15 20:32:24 2009 - - 1 Answers - 0 Comments

A. What does this question has to do with the section of Yahoo! Answers? Put it in the right category under "Science and Mathematics." Thank you.
Answered by Hail Immortal King Roger Federer - Mon Jun 15 20:36:49 2009

Help with Chem balancing equations!!?
Q. Plz help me balance the following equations correctly: 1. Cu + HNO3 = Cu(NO3)2 + H2O + NO2 2. Cu(NO3)2 + Na2CO3 + H2O = CuCO3.Cu(OH)2 + NaNO3 + CO2 3. HNO3 + Na2CO3 = NaNO3 + CO2 +H2O 4. CuCO3.Cu(OH)2 + heat = CuO + H2O + CO2 5. CuO + H2SO4 = CuSO4 + H2O 6. CuSO4 + Mg = MgSO4 + Cu 7. H2SO4 + Mg = MgSO4 + H2 thanks guys!! i really appreciate it!!!
Asked by Aaliyah - Wed Oct 28 22:34:47 2009 - - 2 Answers - 0 Comments

A. 1. 3Cu + 8HNO3 = 3Cu(NO3)2 + 4H2O + 2NO2 2. 2Cu(NO3)2 + 2Na2CO3 + H2O = CuCO3.Cu(OH)2 + 4NaNO3 + CO2 3. 2HNO3 + Na2CO3 = 2NaNO3 + CO2 + H2O 4. CuCO3.Cu(OH)2 + heat = 2CuO + H2O + CO2 5. Already balanced 6. Already balanced 7. Already balanced
Answered by lskywalker4 - Wed Oct 28 23:10:35 2009

Balancing Equations? :S?
Q. i really could use some help with balancing these equations K + H2O >>> KOH +H2 BaO2 >>> BaO + O2 Fe(OH)3 + H2SO4 >>> Fe2(SO4)3 + H2O NH3 + O2 >>> NO + H2O H2 + N2 >>> NH3 CaCO3 + HCl >> H2O + CO2 + CaCl2 AgNO3 + CuCl2 >>> AgCl + Cu(NO3)2 CuSO4 + Al>>> Al2(SO4)3 +Cu
Asked by blue478angel - Thu Jan 18 18:45:16 2007 - - 3 Answers - 0 Comments

A. The goal of equation balancing is to have the same number of each element on each sider of the equation even if they are now part of a different molecue. 2 K + 2 H2O --> 2 KOH + H2 (2 K, 2 O, 4 H on each side) 2BaO2 --> 2BaO + O2 (2 Ba, 4 O on each side) 2Fe(OH)3 + 3H2SO4 --> Fe2(SO4)3 + 6H2O (2 Fe, 18 O, 9 H, 3 S on each side) 4NH3 + 5O2 --> 4NO + 6H2O (4 N, 12 H, 10 O on each side) 3H2 + N2 --> 2NH3 (6 H, 2 N) CaCO3 + 2HCl --> H2O + CO2 + CaCl2 (1 Ca, 1 C, 3 O, 2 H, 2 Cl) 2AgNO3 + CuCl2 --> 2AgCl + Cu(NO3)2 (2 Ag, 2 N, 6 O, 1 Cu, 2 Cl) 3CuSO4 + 2Al --> Al2(SO4)3 + 3Cu (3 Cu, 3 S, 12 O, 2 Al) The trick is to find a starting point and work interatively, looking for common denominators for both sides... a great resource that can… [cont.]
Answered by Charlie - Thu Jan 18 19:20:05 2007

Balancing equations help pls?
Q. copper + sulphuric acid yield copper (II) sulphate + water + sulphur dioxide Cu + H2SO4 ---> CuSO4 + H2O + SO2 Now i'm just confused whether to count the oxygen atoms in the sulphate anion as oxygen atoms. Am I supposed to count it as (SO4) or as S and O? Please show me the balanced equation..tnx
Asked by blafu - Sat Nov 22 06:43:41 2008 - - 5 Answers - 0 Comments

A. You should count S & O individually. Cu + H2SO4 --- CuSO4 + H2O + SO2 First make a list of the elements involved in the equation and their amount in both reactant and product side. Cu - 1 == 1 H - 2 == 2 S - 1 == 1 O - 4 =/= 7 Put a number on the left side of each groups to multiply the amt. of elements there to balance the equation. Cu + 2 H2SO4 --- CuSO4 + 2 H2O + SO2 --answer If you put a # 2 on H2SO4 & H2O, it will make the amt. of H, S & O balanced on both reactant & product side
Answered by xtian - Sat Nov 22 07:00:44 2008

balancing equations!!! =0)?
Q. plz help me balance these!!! FeO+C--- Fe+CO2 HCI+NaOH--- NACI+H2O Ca(OH)2+ CO2--- CaCO3+H2O CuO+H2S--- CuSO4+H2O thankyou i am sooo confused an don worry this aint homework so im not cheatin or anitin=0)))
Asked by Foxychick - Mon Mar 3 10:00:42 2008 - - 5 Answers - 0 Comments

A. (1) 2FeO+C--2Fe+CO2 (2) It is balanced already. (3) It is already balanced. (4) Are you sure you typed it correctly? I'm not sure that this one is possible, because the oxygens can't balance.
Answered by Maggie - Mon Mar 3 10:18:52 2008

this chemistry problem is driving me nuts...PLEASE HELP?!?
Q. im almost done, can anyone please show how to do this? 10 points thanks- when 5.37 grams of CuO are mixed with excess H2SO4, CuSO4, and H2O are formed. how many grams of CuSO4 will be formed? it says to write balanced equation first. again, please help thanks a lot
Asked by kirks - Wed Mar 12 22:55:31 2008 - - 4 Answers - 0 Comments

A. CuO + H2SO4---> CuSO4 + H20 Hence as we can see from the equation, 1 mol of CuO reacts with 1 mol of H2SO4 to give us 1 mol of CuSO4. First, we have to find out the number of mols of CuO that has reacted. Mol = (5.73g / 80) =0.071625mol Hence we know that, similarly, 0.071625mol of CuSO4 is formed, from the balanced equation we've formed earlier. 0.071625mol of CuSO4 = (mass/ mr) = (mass/ 160) Hence, Mass of CuS04= 11.46g Simple:D
Answered by JACY:D - Wed Mar 12 23:10:37 2008

Balance these 2 separate equations please.?
Q. Cu(s) + HNO3(aq) ---> Cu(NO3)2(aq) + NO2(g) + H2O(L) CuSO4(aq) + Na3PO4(aq) ---> (I dont know what this yields though...)
Asked by MoMoChan - Sun Feb 11 14:45:46 2007 - - 3 Answers - 0 Comments

A. Cu + 4 HNO3 --> Cu(NO3)2 + 2 NO2 + 2 H2O 3 CuSO4 + 2 Na3PO4 --> 3 Na2SO4 + CU3(PO4)2
Answered by physandchemteach - Sun Feb 11 14:49:28 2007

I really need your help!?
Q. In science...does this equation balance? I think it does but i arent very clever! Especially at science! CuO + H2SO4 > CuSO4 +H2O p.s. the numbers are supposed to be below the line! but i dont no how... thnx! xxx thanks to you guys hu answered!
Asked by ~ ** ** ~ - Tue Nov 6 14:32:53 2007 - - 5 Answers - 0 Comments

Balance each of the following chemical equations?
Q. 1. _ P(s) + _ O2(g) --> _P4O10(s) 2. _Fe(OH)3(s) ---> _ Fe2O(s) + _H2O(g) 3. _Na2CO3(aq) + _Ca(OH)2(aq) --> __NaOH (aq)+_CaCo3(s) 4. _K3PO4 (aq) + _MgCl2 (aq) --> _Mg(PO4)2(s) + _KCL(aq) 5. _Mg(HCO3)2(aq) +_HCL(aq) --> _MgCl2(aq) + _H2(O) (1) + _Co2(g) 6. _Bi(NO3)3(aq) + _CaI2(aq) --> _BiI3(s) + _Ca(NO3)2(aq) 7. _Cu(s) + _H2SO4 (aq) --> CuSO4(aq) + _H2O(1) + _SO2(g)
Asked by wonderfefe - Wed May 21 21:28:27 2008 - - 3 Answers - 0 Comments

Balancing this equation please help pulling my hair out!?
Q. Please help im stuck 1) 2Cu(s)+4HNO3(aq)-->2H2O(L )+2Cu(NO3)2(aq)+2NO2(g) Balanced? 2) ___NaHCO3(aq)+__Cu(NO3)2( aq)-->__CuCO3(s)+__H2O(l) + ___CO2(g) ___NaNO3(aq) cannot get this one 3) __NaHCO3(aq)+__HNO3(aq)-- >__H2O(l)+___CO2(g)+___Na NO3(aq) 4) __CuCo3(s)+__H2SO4(aq)+__ 5H2O(l)-->__CuSO4*5H2O(s) +__CO2(g) 5 __CuSO4(aq)+__Fe(s)-->__C u(s)+___FeSO4(aq) Balanced? Thank You!!!
Asked by Kimberly M - Mon Nov 10 00:52:12 2008 - - 1 Answers - 0 Comments

A. 1) balanced 2) 2 NaHCO3 + Cu(NO3)2 >> CuCO3 + 2 NaNO3 + CO2 + H2O 3) NaHCO3 + HNO3 >> NaNO3 + H2O + CO2 4) CuCO3 + H2SO4 >> CuSO4 + H2O + CO2 5) balanced
Answered by Dr.A - Mon Nov 10 11:40:34 2008