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Which has more number of atoms, …

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Which has more number of atoms, 100 grams of sodium or 100 gram of iron (given, atomic mass of Na - 23u, fe - 56u)?

    • Posted by Jaskirat Singh 4 years, 11 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Aman Shyoran 4 years, 11 months ago

    Sodium

    0Thank You

    Gaurav Seth 4 years, 11 months ago

    <article id="post-1205951">

    Given

    Atomic mass of Na = 23 u

    Atomic mass of Fe = 56 u

    Then, gram atomic mass of Na = 23 g

    Now, 23 g of Na contains = 6.022 x 1023 g number of atoms

    Thus, 100 g of Na contains = 6.022 x 1023 / (23 x 100 number of atoms)

     100 g of Na contains = 2.6182 x 1024 number of atoms

    Then, gram atomic mass of Fe = 56 g

    Now, 56 g of Fe contains = 6.022 x 1023 g number of atoms

    Thus, 100 g of Fe contains = 6.022 x 1023 / (56 x 100 number of atoms)

    100 g of Fe contains = 1.0753 x 1024 number of atoms

    Therefore, 100 grams of sodium contains more number of atoms than 100 grams of iron.

    </article>

    1Thank You

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