What is the mass of a piece of aluminum if, when it is cooled from 240 to 40 degrees
| April 27, 2021 | education
What is the mass of a piece of aluminum if, when it is cooled from 240 to 40 degrees, an amount of heat of 184 kJ is released?
To calculate the value of the mass of a taken piece of aluminum, we use the formula: Q = Ca * m * (t0 – t), from where we express: m = Q / (Ca * (t0 – t)).
Variables and constants: Q – the amount of released heat (Q = 184 kJ = 184 * 10 ^ 3 J); Ca – specific heat capacity of aluminum (Ca = 950 J / (kg * ºС)); t0 – temperature before cooling (t0 = 240 ºС); t – steady-state temperature (t = 40 ºС).
Calculation: m = Q / (Ca * (t0 – t)) = 184 * 10 ^ 3 / (920 * (240 – 40)) = 1 kg.
Answer: The mass of the taken piece of aluminum is 1 kg.
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