ChemistryChemical combinationJAMB
Find the percentage by mass of nitrogen in NH₄NO₃. (N = 14, H = 1, O = 16)
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Answer: A. 35%
M = 14 + 4 + 14 + 48 = 80; nitrogen = 28/80 × 100% = 35%. Both N atoms count.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.