Question

The pressure if a gas is 100 kpa if it is compressed from 1 m³ to 10 dm³ find the work done in joulea

Answer 1

Explanation:

Pressure, P = 100 Kpa = 100000 Pa

Initial volume, V(1) = 1 m^3

Final volume, V(2) = 10 dcm^3 = 0.01 m^3

So work done, W = P × [ V(2) - V(1) ]

= 100000 × ( 0.01 - 1 ) Joule

= - ( 99 × 10^3 ) Joule

The negative sign indicates that the work is done on the gas.