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3.2 Internal energy and energy transfers

3.2 Internal energy and energy transfers

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Question 4

A sample of solid sulfur has an initial temperature of 25.0 ∘C25.0\ ^\circ\text{C}25.0 ∘C. The total thermal energy required to raise the temperature of this sample to its melting point of 115.0 ∘C115.0\ ^\circ\text{C}115.0 ∘C and completely melt it is 54.45 kJ54.45\text{ kJ}54.45 kJ.

Given:

  • Specific heat capacity of solid sulfur = 710 J/(kg ∘C)710\text{ J/(kg }^\circ\text{C)}710 J/(kg ∘C)
  • Specific latent heat of fusion of sulfur = 4.50×104 J/kg4.50 \times 10^4\text{ J/kg}4.50×104 J/kg

Calculate the mass of the sulfur sample in kilograms.

[4]
Markscheme

3.2 Internal energy and energy transfers Questions

  1. GCSE
  2. /Physics
  3. /3.2 Internal energy and energy transfers

37 exam-style questions on AQA GCSE Physics 3.2 Internal energy and energy transfers, covering 3.2.1 Internal energy, 3.2.2 Temperature changes in a system and specific heat capacity, and 3.2.3 Changes of state and specific latent heat. Each one has a worked solution and a mark scheme showing where the marks go.

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