Question

A gas occupies 7.5 liters at a pressure of 25.0 mm Hg. What is the volume

when the pressure is increased to 75.0 mm Hg?

Answer 1

2.5 litres

Step-by-step explanation:

The volume can be found by using the formula for 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're finding the final volume

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

We have

`V_2 = (7.5 * 25)/(75) = (187.5)/(75) \\ = 2.5`

We have the final answer as

2.5 litres

Hope this helps you