Post Utme Oau 2017 Chemistry Question 7
Practice objective / multiple choice question 7 from the 2017 Post Utme Oau Chemistry examination.
A 2.5 g sample of a non-metallic element (X) is found to have a mass of 2.0 g after being heated in a stream of oxygen gas. If the molar mass of X is 40 g/mol, what is the empirical formula of the oxide formed?
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About This Question
This is Post Utme Oau 2017 Chemistry Question 7. It is one of the objective questions from the 2017 Post Utme Oau Chemistry examination.
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