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22 April, 12:53

2.5 million atoms of a particular element have a mass of 8.33 x 10-16 grams. what is this element

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  1. 22 April, 13:16
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    Find the mass of one atom by:

    8.33 x 10^{-16} / 2.5 x 10^{6} = 3.32 x 10^{-22} g

    Convert it into amu.

    1 g = 6.022 x 10^{23} amu

    so, 3.32 x 10^{-22} x 6.022 x 10^{23} = 200.6 amu

    Now look at the periodic table and search for 200.6 amu element.

    The element is Mercury (Hg)
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