Calculate the percentage by mass of nitrogen in ammonium phosphate, (NH4)3PO4(\text{NH}_4)_3\text{PO}_4(NH4)3PO4.
Give your answer to 1 decimal place.
(relative atomic masses: N=14.0\text{N} = 14.0N=14.0, H=1.0\text{H} = 1.0H=1.0, P=31.0\text{P} = 31.0P=31.0, O=16.0\text{O} = 16.0O=16.0)
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.