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27 March, 20:35

The number of moles in 2.93 g of Li2O in corrext sig figs

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  1. 27 March, 20:38
    0
    Mass of Li2O = 2.93g

    Molecular mass of Li2O = 29.88g/mol

    No of mole of Li2O = Mass/Molar mass

    No of mole of Li2O = 2.93/29.88

    No of mole of Li2O = 0.0981mol
  2. 27 March, 20:53
    0
    0.1 mol

    Explanation:

    Number of mole = mass/molar mass

    lithium have a mass number of 7 and oxygen have a mass number of 16.

    so, (7x2) + 16

    = 30

    therefore, number of moles = 2.93/30

    = 0.10
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