Determine the mass of the following : (i) 0.7 mole of `O_(2)` gas (ii) – InterviewSolution

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1.	Determine the mass of the following : (i) 0.7 mole of `O_(2)` gas (ii) 0.7 mol of O atoms .
Answer» (i) Molecular mass of `O_(2) ` gas = 32 `therefore ` mass = mole `xx` molecular mass = `0.7 xx 32 = 22.4` g (ii) Atomic mass of O atom = 16 `therefore` mass = mole `xx` atomic mass = `0.7 xx 16 = 11.2` g .

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