Answer:
The new pressure of the gas comes out to be 400 KPa.
Explanation:
Initial volume of gas = V = [tex]10\textrm{ m}^{3}[/tex]
Initial pressure of gas = P = 120 KPa
Final volume of gas = V' = [tex]3\textrm{ m}^{3}[/tex]
Assuming temperature to be kept constant.
Assuming final pressure of the gas to be P' KPa
[tex]PV = P'V' \\120\textrm{ KPa}\times 10\textrm{ m}^{3} = \textrm{P'}\times 3\textrm{ m}^{3} \\\textrm{P'} = 400\textrm{ KPa}[/tex]
New pressure of gas = 400 KPa