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9 March, 21:59

How many atoms are in 5.40mol of iron

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Answers (1)
  1. 9 March, 22:32
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    32.52 * 10²³ atoms

    Explanation:

    Given dа ta:

    Number of mole of iron = 5.40 mol

    Number of atoms = ?

    Solution:

    The given problem will solve by using Avogadro number.

    It is the number of atoms, ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

    The number 6.022 * 10²³ is called Avogadro number.

    For example,

    18 g of water = 1 mole = 6.022 * 10²³ molecules of water

    1.008 g of hydrogen = 1 mole = 6.022 * 10²³ atoms of hydrogen

    For 5.40 mole of iron:

    55.845 g = 1 mole = 6.022 * 10²³ atoms

    5.40 * 6.022 * 10²³

    32.52 * 10²³ atoms
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