What amount of heat is given off by a cast iron iron weighing 3.2 kg when cooled from 80 to 15 degrees.
| June 2, 2021 | education
These tasks: m (weight of the cast iron in question) = 3.2 kg; t1 (initial temperature) = 80 ºС; t (final temperature of the iron) = 15 ºС.
Constants: Сч (specific heat capacity of cast iron) = 540 J / (kg * K).
The heat that the cast iron in question will release during cooling is calculated by the formula: Q = Ch * m * (t1 – t2).
Calculation: Q = 540 * 3.2 * (80 – 15) = 540 * 3.2 * 65 = 112 320 J.
Answer: The cast iron in question, when cooled, will release 112 320 J of heat.
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