Question

Any one is able to do

Answer 1

Answer:

4/5 times P1

Explanation:

P1V1 = P2V2 for ideal gas

P1 = P1

V1 = V1

V2 = 25*V1/100 + V1

     = 125*V1 / 100

P2 = ?

P1V1 = P2V2 -------------> Boyle's Law

P1 x V1 = P2 x 125 x V1/100

P2 = P1 x V1 x 100 / (125 x V1)

     = P1 x 4/5

Thus, new pressure will be equal to 4/5 i.e. 80% the new pressure.

Hope this helps! :)