In a system the mass is kept constant. The initial temperature of the system is 91.2∘C, the pressure is 2.93 atm, and the volume is 6.7 L. If the temperature changes to 18.5∘C and the volume changes to 20.2 L what is the pressure?
3. Solve for P2: P2=P1V1T2T1V2=2.93 atm⋅6.7 L⋅291.65K364.35K⋅20.2 L=1.0511 atm
Step 1 :1. Convert Celsius to Kelvin: T1=91.2∘C+273.15=364.35K, T2=18.5∘C+273.15=291.65K
Step 2 :2. Use the combined gas law: P1V1T1=P2V2T2
Step 3 :3. Solve for P2: P2=P1V1T2T1V2=2.93 atm⋅6.7 L⋅291.65K364.35K⋅20.2 L=1.0511 atm