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What is the mass of (i) 1 mole of water ...

What is the mass of (i) 1 mole of water (ii) 0.5 mole of `CO_(2)` (iii) 2.5 moles of `Cl_(2)`?

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(i) 18.0 g (ii) 22.0 (iii) 177.5 g
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