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31 January, 19:38

What is the total number of oxygen atoms represented in the formula na2c03.10h2o?

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  1. 31 January, 20:36
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    As per the given chemical formula - Na2CO3.10H2O, one mole of the chemical compound contains 13 moles of oxygen atoms. Hence

    Number of moles of oxygen atoms in one mole of Na2CO3.10H2O = 13

    number of moles of oxygen atoms in 0.2 moles of Na2CO3.10H2O = 13 X 0.2 = 2.6

    Now, one mole of a substance contains 6.022 X 10^23 particles of the substance. Thus

    number of atoms of oxygen in one mole of oxygen atom = 6.022 X 10^23

    number of moles of oxygen atoms in 2.6 moles of oxygen atoms = 2.6 X 6.022 X 10^23 = 15.657 X 10^23

    = 1.566 X 10^24

    Thus, there are 1.566 X 10^24 atoms of oxygen in 0.2 moles of Na2CO3.10H2O.

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