Sample Problem: Chemistry? How do I solve this problem?

I'm studying for my chemistry test, and my teacher isn't very much help. How do I solve this problem? 1) When copper is mixed with 74.5 grams of sulfuric acid, how many mL of sulfur dioxide gas is produced if the experiment is conducted at 27 c and 2.00 atm of pressure? The chemical equation is Cu +2H2SO4 ----> CuSO2 + 2H2O I believe. I'm pretty sure you have to plug it into PV= nRT. any suggestions?