How much heat will be released during the condensation of water weighing 400 g? The specific heat of vaporization

How much heat will be released during the condensation of water weighing 400 g? The specific heat of vaporization of water is 2.3 * 10 to the sixth power J / kg.

Condition:
m = 400 g = 0.4 kg.
L = 2.3 * 10 ^ 6 J / kg.
To find :
Q-? J.
Decision :
Q = L * m.
[Q] = J / kg / kg = J * kg / kg = J.
Q = 2.3 * 10 ^ 6 * 0.4 = 920000 (J).
Answer: 920000 J = 920 kJ.



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