Question
What quantity of H _2 O in gram is present in 0.25 mol of it?
What quantity of H _2 O in gram is present in 0.25 mol of it?
A. 4.5 g
Molar mass of H _2 O = 2 1 + 16 = 18 g/mol Mass of H _2 O = moles molar mass Mass = 0.25 18 = 4.5 g Answer: 4.5 g
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