ChemistryChemical combinationWAEC
The percentage of water of crystallisation in CuSO₄·5H₂O (Cu = 64, S = 32, O = 16, H = 1) is
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Answer: A. 36%
Water = 90 g in 250 g; 90 ÷ 250 × 100 = 36%.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.