Chem problem, please help!!!!?
2018-01-17 7:26 am
Calculate the heat (q, in kJ) gained by 8.2 grams of ice when added to a glass of room temperature water. The molar enthalpy of fusion (ΔHfus ) is +6.01 kJ/mol for this process.
回答 (1)
2018-01-17 7:31 am
✔ 最佳答案
Molar mass of H₂O = (1.0×2 + 16.0) g/mol = 18.0 g/molNo. of moles of ice = (8.2 g) / (18.0 g/mol) = 8.2/18.0 mol
Heat gained by the ice, q = (8.2/18.0 mol) × (6.01 kJ/mol) = 2.74 kJ ≈ 2.7 kJ (to 2 sig. fig.)
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