The heat energy lost by the glass casserole dish is -25.2 kJ based on the principle of conservation of energy.
What is the principle of conservation of energy?
The principle of the conservation of energy states that energy is neither created nor destroyed in an isolated system though it can change form.
Based on the principle above;
- heat lost by the dish = heat gained by the water
To calculate the quantity of Heat involved, the formula below is used:
- Quantity of Heat = mass × specific heat capacity × temperature change
Mass of the glass dish = 0.5 kg = 500 g
specific heat capacity of glass = 0.84 J/g/K
temperature change = 50 - 110 = -60 K
Heat lost = 500 × 0.84 × (-60) = -25200 J
Therefore, heat energy lost by the glass casserole dish is -25.2 kJ.
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