Expanding at constant pressure, the gas did 20 kJ work

Expanding at constant pressure, the gas did 20 kJ work. What is the pressure in the gas if the volume of gas increased by 0.2 m3 during expansion?

To find the value of the constant pressure of the specified gas, we use the formula: A = P * ΔV, from where we express: P = A / ΔV.

Variables: A – the work done by the indicated gas (A = 20 kJ = 2 * 10 ^ 4 J); ΔV – increase in gas volume (ΔV = 0.2 m3).

Calculation: P = A / ΔV = 2 * 10 ^ 4 / 0.2 = 10 * 10 ^ 4 Pa.

Answer: The pressure in the indicated gas is 100 kPa.