Question

Refer to the following equation: 4NH3 + 7O2= 4NO2 +6HO, How many moles of ammonia would be required to produce 11.9 mol of water?

Can you please walk me through the steps on how to figure this problem?

Answer 1

It's an easy walk through the park. Use the coefficients in the balanced equation and dimensional analysis.
11.9 mols H2O x (4 mols NH3/6 mol H2O) = 11.9 x (4/6) = ? mols NH3 required.

Answer 2

7.93 mol