A child playing on the beach mixes 3.4 kg of sand at 56oC with 1.3 kg of water. After they reach thermal equilibrium, the sand is now at 42oC. What is the initial temperature of the water?
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Given: m = 3.4 kg = 3400 g c = 0.2 cal/g°C Initial temperature of sand = 56°C Final temperature of sand = 42°C Q = 3400 g * 0.2 cal/g°C * (56°C - 42°C) Q = 3400 g * 0.2 cal/g°C * 14°C Q = 9520 cal Show more…
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