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4 March, 23:36

Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron?

a) A mole of iron has more atoms.

b) They both have the same mass.

c) A mole of magnesium has more mass.

d) They both have the same number of atoms.

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Answers (2)
  1. 5 March, 01:41
    0
    I believe the correct answer from the choices listed above is option D. A mole of magnesium compares with a mole of iron by having the same number of atoms which can be determined by using the Avogadro's number. Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole.
  2. 5 March, 02:59
    0
    The correct answer is (D) They both have the same number of atoms.

    The Explanation:

    as we compare 1 mole of Mg with 1 mole iron so they have the same number of moles.

    and when the number of atoms = number of moles * Avogadro's number

    = 6.02 x 10^23

    ∴ both have the same number of atoms
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