Problem

In a system the mass is kept constant. The initial temperature of the system is 91.2C, the pressure is 2.93 atm, and the volume is 6.7 L. If the temperature changes to 18.5C and the volume changes to 20.2 L what is the pressure?

Answer

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Answer

3. Solve for P2: P2=P1V1T2T1V2=2.93 atm6.7 L291.65K364.35K20.2 L=1.0511 atm

Steps

Step 1 :1. Convert Celsius to Kelvin: T1=91.2C+273.15=364.35K, T2=18.5C+273.15=291.65K

Step 2 :2. Use the combined gas law: P1V1T1=P2V2T2

Step 3 :3. Solve for P2: P2=P1V1T2T1V2=2.93 atm6.7 L291.65K364.35K20.2 L=1.0511 atm

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