Igcse Model Questions Vol1 2024 Physics Question 8

Practice essay / theory question 8 from the 2024 Igcse Model Questions Vol1 Physics examination. This question covers Heat, Specific heat capacity, Calorimetry, Latent heat, Energy conservation .

Igcse Model Questions Vol1 2024 Physics Essay / Theory
Topics: Heat Specific heat capacity Calorimetry Latent heat Energy conservation
Question 8 IGCSE_MODEL_QUESTIONS_VOL1 • 2024 • PHYSICS • essay

A 0.250 kg block of aluminium (specific heat capacity 900 J kg⁻¹ K⁻¹) at 150 °C is placed in a well‑insulated copper calorimeter containing 0.500 kg of water at 25 °C. The specific heat capacity of water is 4180 J kg⁻¹ K⁻¹ and that of copper is 385 J kg⁻¹ K⁻¹. Assume no heat loss to the surroundings.

Question Parts

( a )
Write the energy‑balance equation for the system when thermal equilibrium is reached, clearly stating the terms representing heat lost and gained.
( b )
Calculate the final equilibrium temperature of the system.
( c )
After equilibrium is reached, the water is allowed to evaporate until 20 g of water has turned into steam at 100 °C. The latent heat of vaporisation of water is 2.26 × 10⁶ J kg⁻¹. Assuming the calorimeter and aluminium block remain at the temperature found in part (b), determine (i) the amount of heat removed from the system during this evaporation, and (ii) the new temperature of the aluminium block and copper calorimeter after the evaporation, assuming they lose heat only to the evaporating water.

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About This Question

This is Igcse Model Questions Vol1 2024 Physics Question 8. It is one of the essay questions from the 2024 Igcse Model Questions Vol1 Physics examination.

The question covers Heat, Specific heat capacity, Calorimetry, Latent heat, Energy conservation .

View More Igcse Model Questions Vol1 2024 Physics Questions More Igcse Model Questions Vol1 Practice Questions Back to Questions

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