Consider the following volume-temperature (V-T) diagram for the expansion of 5 moles of an ideal monoatomic gas.

Considering only P-V work is involved, the total change in enthalpy (in Joule) for the transformation of state in the sequence $$X \rightarrow Y \rightarrow Z$$ is ______.

[Use the given data: Molar heat capacity of the gas for the given temperature range, $$C_{V,m} = 12$$ J $$K^{-1}$$ $$mol^{-1}$$ and gas constant, $$R = 8.3$$ J $$K^{-1}$$ $$mol^{-1}$$]