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6 marksSpecific Latent Heat, l

CSEC Physics · May/June 2011 · Paper 2 · Question 2(b)(i)

A busy housewife left 25 g of ice in an open insulated container. When she returned, the ice at 0 °C was converted to water at 3.0 °C.

Calculate the energy needed for the ice to totally melt and to reach its present temperature. Assume no heat losses. [Specific Heat Capacity of water = 4 200 J Kg⁻¹K⁻¹, Specific Latent Heat of Fusion of Ice = 340 000 J Kg⁻¹]

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Other parts of this question

  1. 2(a)(i)Complete Table 3 by inserting the correct symbol and SI Unit which relate to the quantity shown in Column 1.[3 marks]
  2. 2(a)(ii)Define the term 'heat capacity of a substance'.[2 marks]
  3. 2(a)(iii)Write the equation that relates specific heat capacity with heat capacity.[1 mark]
  4. 2(b)(ii)If this melting and heating activity took place over 300 s, calculate the rate at which the ice / water was receiving heat.[3 marks]

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