Neco 2024 Chemistry Question 39
Practice objective / multiple choice question 39 from the 2024 Neco Chemistry examination.
Magnesium metal reacts with excess hydrochloric acid according to: \(\text{Mg} + 2\,\text{HCl} \rightarrow \text{MgCl}_2 + \text{H}_2\). (a) Determine the number of moles of Mg in a 2.00 g sample. (b) Calculate the volume of hydrogen gas produced at STP. (c) If the hydrogen is collected over water at 25\(^\circ\)C and a total pressure of 760 mmHg, with water vapour pressure 23.8 mmHg, what volume of dry hydrogen is collected? Use \(R = 0.0821\,\text{L·atm·K}^{-1}\text{·mol}^{-1}\).
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About This Question
This is Neco 2024 Chemistry Question 39. It is one of the objective questions from the 2024 Neco Chemistry examination.
Difficulty level: Medium .
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