C3H8 44.10
PCl5 208.24
C2H5OH 46.07
NO2 46.01
Na2CO3 105.99

7.99 moles
0.73 moles
0.25 moles

19.7 L
195 L
3.84 L 61 g
C3H8 %C=82 %H=18
Na2CO3 %Na=22
NaCN %Na=47
67.6/200.59=0.34 mol Hg, 10.8/32.07=0.34 mol S, 21.6/16.00=1.35mol O
Hg0.34S0.34O1.35 simplest whole number ratio
HgSO4
Molecular formula empirical molar mass devided by molecular molar mass
296/592=2, need to double the empirical formula to get the molecular formula
Hg2S2O8

4Al +3O2 -> 2Al2O3
2Sn(OH)3 → Sn2O3 + 3H2O
4H2 + Fe3O4 → 3Fe + 4H2O
2Al + 3FeSO4 → Al2(SO4)3 + 3Fe
  C3H8 + 5O2 → 3CO2 + 4H2O
Fe(NO3)2 + 2NaI → FeI2 + 2NaNO3

Ca + KI → will not produce (CaI2 + 2K)
Li + CuSO4 → Li2SO4 + Cu

2Al(NO3)3 + 3K2SO4 → 6KNO3 + Al2(SO4)3
2HF + Ca(OH)2 → CaF2 + 2HOH

2C3H8O + 9O2 → 6CO2 + 8H2O