O Level Chemistry MCQs – Certification Test 191

Relative Molecular Mass MCQ (Question 191) – App & e-Book Download

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MCQ 191: The greatest proportion by mass of nitrogen is in:

Hydrazine (N₂H₄),
ammonium nitrate (NH₄NO₃)
ammonium sulphate (NH₄)₂SO₄
urea (NH₂CONH₂)

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Relative Molecular Mass MCQ App & e-Book – O Level Chemistry Learning Guide

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