Answer
(a) added to the system
(b) $55KJ$
Work Step by Step
(a) We know that the heat should be added to the system so that the gas volume can expand at constant pressure.
(b) We can find the required amount of heat as
$Q=\frac{3}{2}(P\Delta V)+P\Delta V$
$\implies Q=\frac{5}{2}P\Delta V$
We plug in the known values to obtain:
$Q=\frac{5}{2}(130KPa)[0.93m^3-0.76m^3]$
$Q=55KJ$
