Question

How many miles of oxygen gas were used to produce 8.0 moles of water

Answer 1

4 moles

Step-by-step explanation:

Oxygen gas is O2 (two atoms of oxygen)

2 H2 + O2 = 2 H2 O

one mole of oxygen gas produces TWO moles of water

so you need 4 moles of O2 to produce 8 moles of water