Question

If six moles of oxygen gas react in excess hydrogen gas, how many grams of H2O will the reaction produce? (Remember to balance the equation first.)

Answer 1

216 g H2O

Step-by-step explanation:

O2 + 2H2 ---> 2H2O

1 mol 2 mol

6 mol x mol

x mol H2O = 6 mol O2 * 2 mol H2O/1 mol O2 = 12 mol H2O

M(H2O) = 2*1.0 + 16.0 = 18.0 g/mol

12 mol H2O *(18.0 g/1 mol) = 216 g H2O