What amount of heat is required to raise the temperature of 20 grams of water from 10°C to 30°C? The specific heat of water is 4 18 J/gºC.

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Physics

Bob

20 July, 14:34

What amount of heat is required to raise the temperature of 20 grams of water from 10°C to 30°C? The specific heat of water is 4 18 J/gºC.

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Jamal Webster · Answer 1

The specific heat of water is 4.18 J/gC. This means that if 4.18 joules of energy (heat) is applied to a gram of water, the temperature will increase one degree Celsius.

The question has water increasing from 10C to 30C. This means that the water is increasing by 30-10=20C. There is also 20 grams of water. So, the amount of heat energy needed to do this is (4.18*20*20) = 1672J