1. The problem statement, all variables and given/known data If 2.00 m³ of a gas initially at STP is placed under a pressure of 5.00 atm, the temperature of the gas rises to 39.0°C. What is the volume? STP means it's at 0°C and 1 atm of Pressure, correct? V1 = 2.00 m³ V2 = ? T1 = 0°C = 273°K (My main confusion was units: °C vs. °K and atm vs. Pa) T2 = 39°C = 312°K P1 = 1 atm = 101.3 kPa P2 = 6 atm = 607.8 kPa R = 8.135 2. Relevant equations P1*V1 = nR*T1 (nR is a constant) (I don't think I need to use this, but this one translates into the next equation) (P1*V1)/(T1) = (P2*V2)/(T2) 3. The attempt at a solution 101.3*2/273 = 607.8*V2/312 .742 = 1.948*V2 V2 = .3809 m³ This makes sense to me, because pressure is inversely proportional to Volume. As pressure increases, Volume decreases. Am I correct in my work and thinking?