An ideal gas system expands from $7\mathrm{.}40m^3$ to $31\mathrm{.}80m^3$ at constant pressure of $1\mathrm{.}15{10}^{5}Pa.$ If the system absorbs $4\mathrm{.}80{10}^{4}J$ of heat in the process, what is the change in internal energy of the system?

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