solving for a reacrant using a chemical reaction

Question

Ammonia NH3 chemically reacts with oxygen gas O2  to produce nitric oxide NO and water H2O.

What mass of nitric oxide is produced by the reaction of 2.58g of oxygen gas?

Answer 1

4NH₃(g) + 5O₂(g) ==> 4NO(g) + 6H₂O ... balanced equation

2.58 g O₂ x 1 mol O₂ / 32 g x 4 mol NO / 5 mol O₂ x 30 g NO/mol = 1.94 g NO