A mass of 0.10 kg of water at 100 ∘C100\ ^\circ\text{C}100 ∘C is turned completely into steam at 100 ∘C100\ ^\circ\text{C}100 ∘C. The steam is then condensed and cooled to water at 40 ∘C40\ ^\circ\text{C}40 ∘C. The specific latent heat of vaporisation of water is 2 260 000 J/kg2\,260\,000\ \text{J/kg}2260000 J/kg and the specific heat capacity of water is 4200 J/kg ∘C4200\ \text{J/kg}\ ^\circ\text{C}4200 J/kg ∘C. How much energy is released as the steam condenses and cools?
251 200 J
226 000 J
200 800 J
25 200 J
40 exam-style questions on AQA GCSE Physics 3.2 Internal energy and energy transfers, covering 3.2.1 Internal energy, 3.2.2 Temperature changes in a system and specific heat capacity, and 3.2.3 Changes of state and specific latent heat. Each one has a worked solution and a mark scheme showing where the marks go.