InterviewSolution
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InterviewSolution
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What is the mass of (a) 0.2 mole of oxygen atoms? (b) 0.5 mole of water molecules? |
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Answer» Solution :(a) MOLAR mass of oxygen atom = 16 g Mass of oxygen atoms = `"molar mass" xx "number of moles"` `= 16 xx 0.2` = 3.2 g (B) Molar mass of water MOLECULE `(H_(2)O) = (2 xx 1) + 16` = 2 +16 = 18 g Mass of water molecule = `"molar mass" xx "number of moles"` `= 18 xx 0.5` = 9 g |
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