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2 marksSpecific Latent Heat, l

CSEC Physics · May/June 2013 · Paper 2 · Question 2(b)(iii)

A physicist converts 8 kg of water at 33 °C to steam at 100 °C, assuming no heat loss.

What is the total energy, in mega joules, required to heat the 8 kg of water at 33 °C to steam at 100 °C? [Specific heat capacity of water = 4 200 J kg⁻¹K⁻¹] [Specific latent heat of vaporization of water = 2 300 000 J kg⁻¹]

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Other parts of this question

  1. 2(a)(i)Define the term 'specific heat capacity' of an object.[2 marks]
  2. 2(a)(ii)Complete Table 3 below by inserting the correct symbol and SI Unit which relate to the quantity shown in Column 1.[2 marks]
  3. 2(a)(iii)Write the formula for the General Gas Law, stating clearly what each letter represents.[3 marks]
  4. 2(b)(i)Calculate the energy required to heat the water to 100 °C.[3 marks]
  5. 2(b)(ii)Calculate the energy required to convert the water to steam at 100 °C.[3 marks]

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