Question

12.0 L of gas in a piston at a pressure of 2.00 atm are compressed until the volume is 7.00 L. What is the new pressure inside the piston?

Answer 1

The new pressure inside the piston is 3.43 atm

Calculation

The new pressure is calculated using Boyle's law formula

that is P1V1= P2V2 where,

P1= 2.00 atm

V1= 12.0 L

P2=?

V2= 7.00 L

make P2 the subject of the formula by diving both side by V2

P2 =P1V1/V2

P2= (2.00 atm x12.0 L) / 7.00L = 3.43 atm