You know what, I think I might be stupid. I tried this question for 20 minutes already and I am still stucked 1. The problem statement, all variables and given/known data gas is confined in a tank at pressure of 10 atm and temp of 15C, if half of the gas is withdrawn and temp is raised to 65C, what's the new pressure? 2. Relevant equations pV=nRT 3. The attempt at a solution Don't even joke about this. Help would be welcomed.