Question

How many moles of oxygen gas would be needed to completely burn 8 moles of
hydrogen sulfide?

Answer 1

12 mol O2

Step-by-step explanation:

This is assuming you're using a combustion equation of

2 H2S + 3O2 -> 2H2O + 2SO2

Next time include the equation because that is where you will find your mol to mol ratio

8 mol H2S x (3 mol O2 / 2 mol H2S) = 12 mol O2