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How much energy is needed to reduce water temperature from 15 degrees to 14 degrees?
Wiki User
∙ 13y ago
1 calorie increases 1 gram of water by 1 degree celsius. 4.18 Joules are needed to increase the temperature of 1 gram of water by 1 degree celsius.
To reduce the 1 gram of water 1 degree celsius it would have to give off 1 calorie of energy.
To calculate the energy multiply the mass in grams of water by 4.18 and by the change in temperature. The energy = 4.18 x m x change in T. The answer is in Joules. If you are using calorie as the unit of energy, replace 4.18 J by 1 C.
Note that food is measured in kilocalories (Calories) not metric calories.
Wiki User
∙ 13y ago
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