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16 February, 19:34

Calculate the percent composition of muscovite mica. Its chemical

formula is (KF) 2 (Al2O3) 3 (SiO2) 6 (H2O)

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  1. 16 February, 22:32
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    (KF) 2 (Al2O3) 3 (SiO2) 6 (H2O)

    molecular formula

    K₂F₂Al₆Si₆O₂₂H₂

    2 x 39 + 2 x 19 + 6 x 27 + 6 x 28 + 22 x 16 + 2 x 2

    = 78 + 38 + 162 + 168 + 352 + 4

    = 802

    Percentage of K = 78 x 100 / 802

    = 9.72 %

    Percentage of F = 38 x 100 / 802

    = 4.74 %

    Percentage of Al = 162 x 100 / 802

    = 20.2 %

    Percentage of Si = 168 x 100 / 802

    = 20.9 %

    Percentage of O = 352 x 100 / 802

    = 43.9 %

    Percentage of H = 4 x 100 / 802

    =.54 %
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