Question

1. How many moles of oxygen gas are required to react with 15.56 moles of hydrogen gas? (2 pts.)

2H2 (g) + O2 (g) → 2H2O (g)

Answer 1

7.78moles of O2

Step-by-step explanation:

2H2 (g) + O2 (g) → 2H2O (g)

From the balanced equation,

2 moles of H2 required 1mole of O2.

Therefore, 15.56 moles of H2 will require = 15.56/2 = 7.78moles of O2