The mass of a sample of water at a temperature of 100∘C100^\circ\text{C}100∘C is 1.5 kg. The specific latent heat of vaporisation of water is 2.26 × 106 J/kg.
What amount of energy is needed to completely turn the water into steam?
1.51×106 J1.51 \times 10^6\text{ J}1.51×106 J
3.39×103 J3.39 \times 10^3\text{ J}3.39×103 J
3.39×106 J3.39 \times 10^6\text{ J}3.39×106 J
3.39×109 J3.39 \times 10^9\text{ J}3.39×109 J
27 exam-style questions on OCR GCSE Physics Changes of state. Each one has a worked solution and a mark scheme showing where the marks go.