Respuesta :

Answer;

2.4 atm

Explanation;

At constant temperature;

PV = constant  

P1 = 1.2 atm

V1 = 0.25 L

P2 = ?

V2 = 0.125 L

But;

P1*V1 = P2*V2

Thus;

P2 = P1*V1/V2

     = (1.2 atm)(0.25 L)/(0.125 L)

    = 2.4 atm