Question

A gas volume of 4.0L at a pressure of 205kpa is allowed to expand to a volume of 12.0L. what is the new pressure?​

Answer 1

Answer:

68.3 kilo Pascal

To calculate the new pressure , we use the equation given by Boyle's law. This law states that pressure is inversely proportional to the volume of the gas at constant temperature.

The equation given by this law is:

P1V1 = P2V2

where,

P1 and V1 are initial pressure and volume

P2 and V2 are final pressure and volume.

We are given:

P1= 205kPa

V1=4.0L

P2= ?

V2=12.0L

Putting values in above equation, we get

P2 = P1V1

V2

= 205kPa*4.0L

12.0L

= 68.3kPa

68.3 kilo Pascal is the pressure in the container.

Hope it helps you :)☺