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14.2 Specific heat capacity and latent heat

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Question 18

In a steam oven, steam at 100 ∘C100\ ^\circ\mathrm{C}100 ∘C condenses on cold food and transfers 9.04 × 104 J to it. The specific latent heat of vaporisation of water is 2.26 × 106 J/kg. What mass of steam condenses? Use Q=mLQ=mLQ=mL.

[1]
A

0.040 kg0.040\ \mathrm{kg}0.040 kg

B

25 kg25\ \mathrm{kg}25 kg

C

40 kg40\ \mathrm{kg}40 kg

D

0.0040 kg0.0040\ \mathrm{kg}0.0040 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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