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Verified Answer :

The mass per cent of hydrogen is 8.05%

What is the mass percentage?

The mass percentage of a solution is defined as the ratio of the mass of solute that is present in a solution, relative to the mass of the solution, as a whole.

The chemical formula of ammonium phosphate is \((NH_{4})_{3}HPO_{4}\)

There is 3 X 4=12 Hydrogen atom in one molecule ammonium phosphate.

The total mass of one molecule is \((NH_{4})_{3}HPO_{4}\) =149.

The mass of hydrogen atoms in one molecule is 12.

mass % H = \(\frac{12X 100}{149}\)

mass % H =  8.05%

Hence, the mass per cent of hydrogen is 8.05%

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