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31 October, 06:13

A 1.0 g sample of hydrogen reacts completely with 19.0 g of fluorine to form a compound of

hydrogen and fluorine. What is the percent composition by mass of hydrogen in this

compound?

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  1. 31 October, 06:42
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    Answer: hydrogen has 0.0504% and Fluorine has 0.950%

    Explanation: H = 1.00794

    F = 18.9984

    1 X 1.00794 + 1 X 18.9984 = 20.00778g/mol

    H = 1.00794/20.00778 = 0.0504%

    F-18.9984/20.00778 = 0.950%
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