Answer
$$24.4 \space JK^{-1}mol^{-1}$$
Work Step by Step
1. Determine the molar mass of copper $\big(Cu\big)$
According to the periodic table, the molar mass of $Cu$ is: $63.5 \space g/mol$
2. Multiply the specific heat capacity of copper by its molar mass, in order to calculate its molar heat capacity:
$$C_m = C_s \times ({molar \space mass})$$ $$C_m = 0.384 \space JK^{-1} g^{-1} \times 63.5 \space g/mol = 24.4 \space JK^{-1}mol^{-1}$$
