How much heat will be released when 5 kg of water hardens?
| May 23, 2021 | education
The amount of heat that will be released when the water solidifies (freezes) can be calculated using the formula:
Q = -λ * m, where λ is the specific heat of melting of ice (λ = 3.4 * 10 ^ 5 J / kg), m is the mass of freezing water (m = 5 kg).
Let’s calculate the released amount of heat:
Q = -λ * m = -3.4 * 10 ^ 5 * 5 = -17 * 10 ^ 5 J = – 1.7 MJ.
Answer: When 5 kg of water hardens, 1.7 MJ of heat will be released.
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