Question

The universal gas constant is
8.31451 J/K · mol.
Calculate the change in internal energy of
8 mol of helium gas when its temperature is
increased by 5.8 K.
Answer in units of J.

Answer 1

$$\Delta U=1.5nR\Delta T$$

$$\Delta U=1.5(8)(8.31451)(5.8)=580\ J$$