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4 July, 10:32

What is the mass of 0.500 mole of Ba? (Watch sf's) 68.7 g 137.3 g 68.65 g 69 g

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  1. 4 July, 10:59
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    68.7g

    molar mass of Ba (137.327) x (.500) = 68.6635

    .500 has 3 sig figs.
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