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31 May, 01:49

Convert 0.20 mol of boron into grams of boron. How many atoms are present?

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  1. 31 May, 05:48
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    The mass of boron is 0.2*10.81=2.162 g. And the atoms number is related with the mole number. So the atom number is 0.2*6.02*10^23 = 1.204*10^23.
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