An aerospace researcher is analyzing the thermal properties of a new lightweight coolant designed for electronics. A sample of this coolant in the solid phase is heated at a constant rate in a sealed container. The temperature-time heating curve obtained during the test is shown below.
Explain how the graph shows that the specific heat capacity of the solid coolant is less than the specific heat capacity of the liquid coolant.
Explain how the graph shows that the specific latent heat of fusion of the coolant is less than its specific latent heat of vaporisation.
During the boiling phase, a mass of 0.060 kg of the coolant vaporises into gas. The thermal energy transferred to the coolant during this phase is 135 kJ. Calculate the specific latent heat of vaporisation of the coolant. State an appropriate unit for your answer.