How much heat is released (in calories) by a sample of Pop Tarts burned in a calorimeter if the temperature of the 100 grams of water in the calorimeter was raised from 23.5°C to 70°C?
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Ответ:
19437 J
Explanation:
mass = 100 g
Initial Temperature = 23.5°C
Final Temperature = 70°C
Temperature change, ΔT = 70 - 23.5 = 46.5
Heat = ?
The parameters are related by the equation;
H = mc ΔT
where c = specific heat capacity = 4.18 J/g°C
H = 100 * 4.18 * 46.5 = 19437 J
Ответ:
0.894 or 2.78
Explanation:
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