Mass relationships in chemical reaction:

Question

1. For the combustion of methane, beginning with 3.15 mole of CH4 How many moles of O2 are required to completely consume the CH4?

Answer 1

The balanced chemical equation for the combustion of methane is:

CH4 + 2O2 → CO2 + 2H2O

This equation tells us that for every 1 mole of CH4, we need 2 moles of O2. Therefore, for 3.15 moles of CH4, we will need:

3.15 mol CH4 x (2 mol O2/1 mol CH4) = 6.30 mol O2

So, 6.30 moles of O2 are required to completely consume 3.15 moles of CH4.