Respuesta :

Q = m*Hfus 
Q ≈ (0.025 kg)(333.55 kJ/kg) 
Q ≈ 8.33875 kJ ≈ 8.34 kJ

The amount of heat released by 38 g sample of water to freeze is 12692 J

From the question given above, the following data were obtained:

Mass of water (m) = 38 g

Heat of fusion (ΔHf) of water = 334 J/g

Heat (Q) released =?

The heat released by the water can be obtained as follow:

Q = m•ΔHf

Q = 38 × 334

Q = 12692 J

Therefore, the heat released by the water to freeze is 12692 J

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