Stoichiometry Review

1 17.03 g NH3 4 mol NH3 . How many grams of O2 are needed to produce 15.5 g of H2O? 15.5 g H2O x 1 mol H2O x 7 mol O2 x 32.00 g O2 = 32.1 g O2. 1 18.02 g H2O 6 mol H2O 1 mol O2. 2 Al + 6 HCl ----> 3 H2 + 2 AlCl3 . If you start with 5 L of 1.5 M HCl and you make 1.98 g of H2. ... ................
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