Post Utme Uniben 2019 Chemistry Question 30

Practice objective / multiple choice question 30 from the 2019 Post Utme Uniben Chemistry examination.

Post Utme Uniben 2019 Chemistry Objective / Multiple Choice
Question 30 POST_UTME_UNIBEN • 2019 • CHEMISTRY • objective

A sample of a metal oxide has a mass of 25.0 g and a volume of 5.00 cm^3. If the density of the oxide is 4.50 g/cm^3, what is the number of moles of oxygen in the sample?

Answer Options

Correct Answer A. 0.111 mol
B. 0.222 mol
C. 0.333 mol
D. 0.444 mol
Correct Answer
A
Correct Option:
0.111 mol

About This Question

This is Post Utme Uniben 2019 Chemistry Question 30. It is one of the objective questions from the 2019 Post Utme Uniben Chemistry examination.

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