Heat And Thermodynamics

7 mol of a certain monoatomic ideal gas undergoes a temperature increase of \(40 \mathrm{~K}\) at constant pressure. The increase in the internal energy of the gas in this process is :

(Given \(\mathrm{R}=8.3 \,\mathrm{JK}^{-1} \mathrm{~mol}^{-1}\) )