Question

1. A gas has a volume of 300 mL at 40 kPa of pressure. What will its volume be if the pressure is changed

to 80 kPa?
How to work it out?

Answer 1

V₂ = 150 mL

Step-by-step explanation:

Given that,

Initial volume of a gas,
`V_1=300\ mL`

Initial pressure,
`P_1=40\ kPa`

We need to find the volume of gas if the pressure is changed to 80 kPa. Boyle's law states that the relationship between pressure and volume is inverse. Mathematically,

`P_1V_1=P_2V_2`

`V_2=(P_1V_1)/(P_2)\\\\V_2=(300* 40)/(80)\\\\V_2=150\ mL`

So, the new volume is 150 mL.