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3 May, 01:57

Determine the number of atom in 5.0 moles in SI

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  1. 3 May, 02:20
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    Answer: 3.01 x 10^24 atoms

    Explanation:

    Based on Avogadro's law:

    1 mole of any substance has 6.02 x 10^23 atoms

    So, 1 mole of SI = 6.02 x 10^23 atoms

    5.0 moles = Z atoms

    To get the value of Z, cross multiply:

    (Z atoms x 1 mole) = (6.02 x 10^23 atoms x 5.0 moles)

    Z atoms•1 mole = 30.1 x 10^23 atoms•moles

    Divide both sides by 1 mole

    Z atoms•1 mole / 1 mole = 30.1 x 10^23 atoms•moles / 1 mole

    Z = 30.1 x 10^23 atoms

    [Place Z in standard form

    So, Z = 3.01 x 10^24 atoms]

    Thus, there are 3.01 x 10^24 atoms in 5.0 moles in SI
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