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