Calculate the heat change in joules for freezing 235 g of water at 0 ∘C.
Express your answer as a positive value using three significant figures and include the appropriate units.
Indicate whether heat was absorbed or released in situation above: Absorbed or Released?
Calculate the heat change in joules for freezing 235 g of water at 0 ∘C.?
2016-02-20 7:18 am
回答 (1)
2016-02-20 7:28 am
Heat is RELEASED when water freezes.
Specific latent heat of fusion of water, L = 334000 J/kg
Heat RELEASED
= m L
= (235/1000 kg) × (334000 J/kg)
= 78500 J
Specific latent heat of fusion of water, L = 334000 J/kg
Heat RELEASED
= m L
= (235/1000 kg) × (334000 J/kg)
= 78500 J
收錄日期: 2021-04-18 14:29:20
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