Post Utme Aaua 2018 Geography Question 19
Practice objective / multiple choice question 19 from the 2018 Post Utme Aaua Geography examination.
The Earth's atmosphere is composed of 78% nitrogen, 21% oxygen, and 1% other gases. If a sample of air contains 0.78g of nitrogen, 0.21g of oxygen, and 0.01g of other gases, what is the total mass of the sample?
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About This Question
This is Post Utme Aaua 2018 Geography Question 19. It is one of the objective questions from the 2018 Post Utme Aaua Geography examination.
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