Neco Model Questions Vol1 2019 Chemistry Question 19
Practice objective / multiple choice question 19 from the 2019 Neco Model Questions Vol1 Chemistry examination.
A 2.84 g sample of an unknown non‑metal oxide has the empirical formula \(\mathrm{X_2O_5}\). When the oxide is reduced by heating with excess carbon, the liberated oxygen gas is collected over water and found to have a dry mass of 1.60 g. Determine the atomic mass of element X and identify the element (choose from P, S, As).
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About This Question
This is Neco Model Questions Vol1 2019 Chemistry Question 19. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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