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26 January, 14:27

Aluminum foil used for storing food weighs about 0.3 g per square inch. How many atoms of aluminum are contained in one square inch of the foil?

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  1. 26 January, 18:23
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    The number of atoms of aluminum contained in one square inch of the foil=6

    Explanation:

    Interpretation:

    The number of atoms of aluminum contained in one square inch of the foil is to be calculated.

    Concept introduction: relation to calculate a number of atoms contained in one square inch of the foil is given by:

    NA/c=mNA/AA1

    Where,

    M=mass of aluminum

    NA = Avogadro's number

    AA = Atomic mass of aluminum

    Given:

    Mass of aluminum foil=0.3 g

    M = 0.39g

    Relation to calculate a mass of atoms contained in one square inch of the foil is given by:

    NA/c = mNA/AA1

    M = Mass of aluminum

    NA = Avogadro's number

    AA = Atomic mass of aluminum

    Since,

    Avogadro's number

    =6
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