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14.2 Specific heat capacity and latent heat

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Question 8

An astrophysicist uses liquid nitrogen to cool an infrared detector.

Calculate the thermal energy absorbed when 140.0 g of liquid nitrogen vaporises to gas at its boiling point.

The specific latent heat of vaporisation of nitrogen, LLL, is 1.99 × 105 J/kg.

Use the equation:

E=m×L E = m \times L E=m×L
[2]
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14.2 Specific heat capacity and latent heat Questions

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

36 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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