Hypothetical element A has three stable isotopes. The first isotope has a mass of 35.01 amu and an abundance of 35.00%. The second isotope h

Question

Hypothetical element A has three stable isotopes. The first isotope has a mass of 35.01 amu and an abundance of 35.00%. The second isotope has a mass of 36.01 amu and an abundance of 15.00%. The third isotope has a mass of 37.02 amu and an abundance of 50.00%. What is the atomic mass of element A

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Latifah 6 months 2021-08-12T14:06:20+00:00 1 Answers 5 views 0

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  1. thienan
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    2021-08-12T14:08:12+00:00
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    Answer:

    36.16 amu

    Explanation:

    From the question given above, the following data were obtained:

    1st Isotope:

    Mass of 1st isotope = 35.01 amu

    Abundance of 1st isotope = 35%

    2nd isotope:

    Mass of 2nd isotope = 36.01 amu

    Abundance of 2nd isotope = 15%

    3rd isotope:

    Mass of 3rd isotope = 37.02 amu

    Abundance of 3rd isotope = 50%

    Atomic mass of element A =?

    The atomic mass of element A can be obtained as follow:

    Atomic mass = [(mass of 1st × Abundance)/100] + [(mass of 2nd × Abundance)/100] + [(mass of 3rd × Abundance)/100]

    = [(35.01 × 35)/100] + [(36.01 × 15)/100] + [(37.02 × 50)/100]

    = 12.25 + 5.40 + 18.51

    = 36.16 amu

    Thus, the atomic mass of element A is 36.16 amu

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