To obtain 900J of heat, 100 g of iron was heated by 20 degrees, which is the specific heat capacity of iron.
| April 25, 2021 | education
Initial data: Q (the amount of heat that iron received) = 900 J; m (mass of heated iron) = 100 g (0.1 kg); Δt (change in temperature of taken iron) = 20 ºС.
We express the specific heat of iron from the formula: Q = Czh * m * Δt, whence Czh = Q / (m * Δt).
Calculation: Czh = 900 / (0.1 * 20) = 450 J / (kg * ºС).
Answer: According to the calculation, the specific heat of iron is 450 J / (kg * ºС).
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