To calculate the amount of heat obtained due to crystallization of 100 grams of water, we will use the formula (we take into account that the taken water is already at the crystallization temperature (0 ºС)): Q = m * λ.
Variables and constants: m is the mass of crystallizing water (m = 100 g = 0.1 kg); λ – beats heat of crystallization (λ = 34 * 10 ^ 4 J / kg).
Calculation: Q = m * λ = 0.1 * 34 * 10 ^ 4 = 34 * 10 ^ 3 J.
Answer: When crystallizing 100 grams of water, 34 kJ of heat should be released.
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