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14.2 Specific heat capacity and latent heat

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Question 6

As metal solidifies in a casting mould, it releases 72000 J. The specific latent heat of fusion of the metal is 240000 J/kg. Which mass of metal solidifies? Use Q=mLQ=mLQ=mL.

[1]
A

3.33 kg3.33\ \mathrm{kg}3.33 kg

B

300 kg300\ \mathrm{kg}300 kg

C

0.30 kg0.30\ \mathrm{kg}0.30 kg

D

0.0030 kg0.0030\ \mathrm{kg}0.0030 kg

Markscheme

14.2 Specific heat capacity and latent heat Questions

  1. GCSE
  2. /Physics
  3. /14.2 Specific heat capacity and latent heat

110 exam-style questions on Edexcel GCSE Physics 14.2 Specific heat capacity and latent heat, covering 14.2.1 Heating, temperature and changes of state, 14.2.2 Specific heat capacity and specific latent heat, 14.2.3 Specific heat capacity calculation, 14.2.4 Specific latent heat calculation, and 14.2.5 Reducing energy transfer through thermal insulation. Each one has a worked solution and a mark scheme showing where the marks go.

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