Waec Model Questions Vol1 2020 Chemistry Question 1

Practice objective / multiple choice question 1 from the 2020 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2020 Chemistry Objective / Multiple Choice Hard Difficulty

Question 1 WAEC_MODEL_QUESTIONS_VOL1 • 2020 • CHEMISTRY • objective

A 5.60 g sample of a non‑metal oxide with formula X₂O₃ is heated in a closed vessel, releasing O₂ gas. The O₂ collected occupies 2.00 L at 298 K and 0.950 atm. Determine the atomic mass of the non‑metal X (in g mol⁻¹).

Answer Options

A. 28.5

B. 35.0

Correct Answer C. 30.0

D. 32.1

Correct Answer

Correct Option:

30.0

About This Question

This is Waec Model Questions Vol1 2020 Chemistry Question 1. It is one of the objective questions from the 2020 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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Waec Model Questions Vol1 2020 Chemistry Question 1

A 5.60 g sample of a non‑metal oxide with formula X₂O₃ is heated in a closed vessel, releasing O₂ gas. The O₂ collected occupies 2.00 L at 298 K and 0.950 atm. Determine the atomic mass of the non‑metal X (in g mol⁻¹).

Answer Options

About This Question

Master the Exam!

A 5.60 g sample of a non‑metal oxide with formula X₂O₃ is heated in a closed vessel, releasing O₂ gas. The O₂ collected occupies 2.00 L at 298 K and 0.950 atm. Determine the atomic mass of the non‑metal X (in g mol⁻¹).