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30 June, 01:36

How many total atoms are in 0.560 g of P2O5

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  1. 30 June, 04:12
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    16.499 * 10∧ 21 atoms

    Explanation:

    Given dа ta:

    mass of P2O5 = 0.560 g

    number of atoms=?

    first of all we will calculate the molar mass of P2O5:

    P = 2*31 g/mol = 62 g/mol

    O = 5 * 16 = 80 g/mol

    molar mass of P2O5 = 142 g/mol

    Noe we will find the moles of 0.560 g P2O5:

    moles = mass / molar mass

    moles = 0.560 g / 142 g/mol

    moles = 0.0039 mol

    now we will find the atoms present in 0.0039 moles:

    0.0039 * 6.02 * 10∧ 23 molecules

    2.357 * 10∧ 21 molecules

    P2O5 consist of 7 atoms:

    2.357 * 10∧ 21 * 7 = 16.499 * 10∧ 21 atoms
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