Question

A sample of gas has a volume of 5.00 L at 225 kPa. If the volume is reduced to 2.50 L, what will the pressure be?

Answer 1

The answer is 450 kPa

Step-by-step explanation:

In order to find the pressure we use Boyle's law which is

`P_1V_1 = P_2V_2`

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the final pressure

`P_2 = (P_1V_1)/( V_2) \\`

From the question

P1 = 225 kPa = 225 , 000 Pa

V1 = 5 L

V2 = 2.5 L

We have

`P_2 = (225000 * 5)/(2.5) = (1125000)/(2.5) \\ = 450000`

We have the final answer as

450 kPa

Hope this helps you