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JAMB Physics 1987 Question 22

Question 22

Quantity of Heat

22,000 J of heat is required to raise the temperature of 1.5 kg of paraffin from 20°C to 30°C. Calculate the specific heat capacity of paraffin.

  1. A.1466 J kg−1 °C−1
  2. B.2933 J kg−1 °C−1
  3. C.4400 J kg−1 °C−1
  4. D.5866 J kg−1 °C−1
Show the answer and explanation

Answer: A (1466 J kg−1 °C−1)

Explanation

c = Q/(mθ) = 22 000/(1.5 × 10) ≈ 1466 J kg−1 °C−1.