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A chemist weighed out 20.7 g of sodium. Calculate the number of moles of sodium she weighed out

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  1. Today, 13:27
    0
    about 0.9 mol

    Explanation:

    there are 22.990 g/mol of Na

    20.7/22.99 = 0.900391 mol

    about 0.9 mol
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