Heat, Temperature and Internal Energy — Prelims Questions

Which of the following statements correctly distinguishes between heat and temperature?

An ideal monatomic gas is heated from $27^circ C$ to $127^circ C$. If the initial internal energy of the gas was $1500,\text{J}$, what is its final internal energy?

A $2,\text{kg}$ block of copper (specific heat capacity $385,\text{J/kg}cdot\text{K}$) is heated, and its temperature rises from $20^circ C$ to $70^circ C$. How much heat was absorbed by the copper block?

Which of the following statements about internal energy is correct?

A $100,\text{g}$ block of ice at $0^circ C$ is completely melted into water at $0^circ C$. If the latent heat of fusion of ice is $3.34 \times 10^5,\text{J/kg}$, how much heat is absorbed by the ice?

Two bodies, A and B, are in thermal contact. Body A is at $50^circ C$ and Body B is at $20^circ C$. Which of the following statements is true regarding heat transfer?