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Question 79

Which calculation shows the percentage by mass of hydrogen in ammonium phosphate?

(relative atomic mass of hydrogen, $H=1\text{H} = 1$ , relative formula mass of ammonium phosphate, $(NH4)3PO4=149(\text{NH}_4)_3\text{PO}_4 = 149$ )

$4149×100\frac{4}{149} \times 100$

$12149×100\frac{12}{149} \times 100$

$7149×100\frac{7}{149} \times 100$

$14912×100\frac{149}{12} \times 100$

Markscheme

Calculations involving masses Questions

GCSE
Chemistry
Calculations involving masses

258 exam-style questions on Edexcel GCSE Chemistry Calculations involving masses. Each one has a worked solution and a mark scheme showing where the marks go.

Calculations involving masses

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Calculations involving masses

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Question 79

Which calculation shows the percentage by mass of hydrogen in ammonium phosphate?

(relative atomic mass of hydrogen, $H=1\text{H} = 1$ , relative formula mass of ammonium phosphate, $(NH4)3PO4=149(\text{NH}_4)_3\text{PO}_4 = 149$ )

$4149×100\frac{4}{149} \times 100$

$12149×100\frac{12}{149} \times 100$

$7149×100\frac{7}{149} \times 100$

$14912×100\frac{149}{12} \times 100$

Markscheme

Calculations involving masses Questions

GCSE
Chemistry
Calculations involving masses

258 exam-style questions on Edexcel GCSE Chemistry Calculations involving masses. Each one has a worked solution and a mark scheme showing where the marks go.