The value of the heat capacity at constant volume, CV,,m, for a gas sample was found to vary with temperature according to the expression CV,m (in J mol-1 K-1) = 11.86 + 0.3665 T. Calculate the change in the internal energy of 1.00 mol of the gas when the temperature is raised from 25oC to 200oC at constant volume,. [26.8 kJ]

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