Enter the correct number into the blank space.
1) Balance the equation:
LiOH(s) + CO2(g) Li2CO3(s) + H2O(l)
2) Balance the following equations:
a) Calcium cyaniamide to produce ammonia:
CaCN2(s) + H2O(l) CaCO3(s) + 2NH3(g)
b) Production of diborane:
2NaBH4(s) + H2SO4(aq) B2H6(g) + H2(g) + Na2SO4(aq)
3) One of the major uses of sulfuric acid is the production of phosphoric acid and calcium sulfate. Balance this reaction:
Ca3(PO4)2(s) + H2SO4(aq) 3CaSO4(s) + 2H3PO4(aq)
4) Balance these reactions:
a) Au2S3(s) + 3H2(g) 2Au(s) + H2S(g)
b) Sn(s) + HBr(aq) SnBr2(aq) + H2(g)
c) Cu(s) + H2SO4(aq) CuSO4(aq) + SO2(g) + 2H2O(l)
5) Balance the following COMBUSTION reactions (make sure you get rid of any fractions needed to balance the reaction):
a) 2C8H18(l) + O2(g) 16CO2(g) + 18H2O(g)
b) C12H22O11(s) + 12O2(g) CO2(g) + 11H2O(g)