Neco 2019 Chemistry Question 36
Practice objective / multiple choice question 36 from the 2019 Neco Chemistry examination.
An unknown non‑metal forms an oxide with empirical formula \(\mathrm{X_{2}O_{3}}\). A 1.50 g sample of this oxide is heated with excess hydrogen gas, producing water and the elemental non‑metal. The water obtained weighs 0.90 g. Determine the atomic mass of the non‑metal \(X\) in g·mol\(^{-1}\).
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About This Question
This is Neco 2019 Chemistry Question 36. It is one of the objective questions from the 2019 Neco Chemistry examination.
Difficulty level: Hard .
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