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20 February, 16:07

What is the percent composition by mass of hydrogen in NH4HCO3 (gram-formula mass = 79 grams/mole) ?

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  1. 20 February, 16:25
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    Percent composition = mass of element in compound/mass of compound.

    mass of hydrogen in compound=5 (5 H atoms are present) ...

    therefore,

    % composition = 5/79 * 100

    =6.3%
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