Latent heat energy
During a state change in a school calorimetry trial, \(0.16\,\text{kg}\) of material has latent heat \(304000\,\text{J kg}^{-1}\). Calculate the energy needed for the state change. Enter the numerical result and choose the interpretation that matches the physical meaning.
Worked practice: physics data and result
Read the physical quantities first, then calculate the result and state what it means.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.