Can somebody balance these chemical equations please?
Q. I'm a junior in h.s and we are learning how to chemical equations. We just did a lab and now we have to balance 20 chemical equations. I'm soo lost and was wondering if someone could help me out by balancing these chemical equations for me. Single Displacement Fe+S yeilds ___ Mg+O2 yeilds___ Cu+O2 yeilds___ CaO+H2O yeilds___ Decomposition HgO yeilds___ NaHCO3 yeilds___ CuSO4+5H2Oyeilds___ Single Displacement Zn+HCl yeilds___ Zn+CuSO4 yeilds___ NaBr+Cl2 yeilds___ Ca+H2O yeilds___ Cu+Pb(NO3)2 yeilds___ Double Displacement AgNO3+NaCl yeilds___ Na2SO3+HCL yeilds___ AlCl3+NH4+OH yeilds___ NaOH+HCl yeilds___ Na2CO3+HCl yeilds___ Sr+MgSO4 yeilds___ (thats supposed to be strontium plus magnesium sulfate. I'm not sure if i wrote it correct. AHH)… [cont.]
Asked by cnorwood22 - Mon Nov 26 16:15:47 2007 - - 1 Answers - 0 Comments

A. 1) Fe(s) + S(s) --> FeS(s) 2) 2Mg(s) + O2(g) --> 2MgO(s) 3) 4Cu(s) + O2(g) --> 2Cu2O(s) 4) CaO(s) + H2O(l) --> Ca(OH)2(aq) 5) 2HgO(s) --> 2Hg(s) + O2(g) 6) 2NaHCO3(s) --> Na2CO3(s) + CO2(g) + H2O(l) 7) CuSO4 5H2O(s) --> CuSO4(s) + 5H2O(l) 8) Zn(s) + 2HCl(aq) --> ZnCl2(aq) + H2(g) 9) Zn(s) + CuSO4(aq) --> ZnSO4(aq) + Cu(s) 10) NaBr(aq) + Cl2(g) --> NaCl(aq) + BrCl(g) 11) Ca(s) + 2H2O(l) --> Ca(OH)2 + H2(g) 12) Cu(s) + Pb(NO3)2(aq) --> Cu(NO3)2(aq) + Pb(s) 13) AgNO3(aq) + NaCl(aq) --> AgCl(s) + NaNO3(aq) 14) Na2SO3(aq) + 2HCl(aq) --> H2SO3(aq) + 2NaCl(aq) 15) AlCl3(s) + 3NH4OH(aq) --> AlOH3 + 3NH4Cl 16) NaOH(aq) + HCl(aq) --> NaCl(aq) + H2O(l) 17) Na2CO3 (aq) + 2HCl --> 2NaCl(aq) + CO2(g) + H2O(l) 18) Sr(s) + MgSO4(ss) --> Mg(s) + SrSO4(ss [cont.]
Answered by Dr Dave P - Tue Nov 27 10:19:22 2007

Balance Chemical Equations?
Q. I've been having trouble figuring out the products in some chemical equations for a lab. All of the products I have down are eduacted guesses. NH4OH (aq) + NaOH (aq) --> (the teacher said to change the NH3 to NH4OH to make the reaction easier to figure out) NH4OH (aq) + Na2S --> NaOH (aq) + (NH4)2S (s) BaCl2 (aq) + CoCl2 (aq) --> CoCl2 (aq) + CuSO4 (aq) --> CoSO4 (s) + CuCl2 (aq) CoCl2 (aq) + Na2CO3 (aq) --> Co(CO3) (s) + 2 NaCL (aq) Na2CO3 (aq) + NaOH (aq) --> Na2CO3 (aq) + Na2S (aq) --> NaOH (aq) + Na2S (aq) --> Any suggestions would be greatly appreciated!
Asked by Stephen J - Tue Oct 23 00:09:58 2007 - - 2 Answers - 0 Comments

A. The ones you haven't put in products for don't react. An abbreviation for "no reaction" is NR.
Answered by papastolte - Tue Oct 23 00:21:04 2007

Stoichiometry Mass to Mass Problems?
Q. 1. Chlorine, Cl2, is one of the most important industrial chemicals. Each day, many tons of chlorine are produced by the electrolysis of molten sodium chloride. Most of this chlorine is used to purify water supply or to beach paper and cloth. Consider the balanced equation: 2NaCl ---> 2Na + Cl2 a. Determine how much NaCl is needed to form 500g of Cl2. b. How much sodium metal can be produced at the same time? 2. Graphite is one form of carbon that can be easily burned in air to form CO2. If one mole of carbon is burned, how much CO2 in grams is produced? 3. Copper can be formed through the reaction of iron fillings with CuSO4 via a single displacement reaction. a. Write a balanced equation for the reaction. b. How much copper will be… [cont.]
Asked by Jenna W - Sun Dec 14 20:01:18 2008 - - 1 Answers - 0 Comments

A. 1. 500g CL2 (1mole Cl2/71 g Cl2) (2 mole NaCl/1 mole Cl2) ( (mass of NaCl)/1mole NaCl) answer to A do the same for #2 only w Na ---known | unknown--- mass <-> moles <-> moles<-> mass
Answered by angela_mdom - Sun Dec 14 20:05:40 2008