A monatomic ideal gas initially fills a V0 = 0

A monatomic ideal gas initially fills a V₀ = 0.35 m³ container at P₀ = 75 kPa. The gas undergoes an isobaric expansion to V₁ = 1.3 m³. Next it undergoes an isovolumetric cooling to its initial temperature T₀. Finally it undergoes an isothermal compression to its initial pressure and volume.

1) Calculate the heat absorbed Q₁, in kilojoules, during the isobaric expansion (first process).

2) Show an expression for the change in internal energy, ΔU₁ during the isobaric expansion (first process).

3) Calculate the work done by the gas, W₂, in kilojoules, during the isovolumetric cooling (second process).

4) Calculate the heat absorbed Q₂, in kilojoules, during the isovolumetric cooling (second process). 

5) Calculate the change in internal energy by the gas, ΔU₂, in kilojoules, during the isovolumetric cooling (second process).

6) Calculate the work done by the gas, W₃, in kilojoules, during the isothermal compression (third process).

7) Calculate the change in internal energy, ΔU₃, in kilojoules, during the isothermal compression (third process).

8) Calculate the heat absorbed Q₃, in kilojoules, during the isothermal compressions (third process).