Neco Model Questions Vol1 2025 Chemistry Question 34
Practice objective / multiple choice question 34 from the 2025 Neco Model Questions Vol1 Chemistry examination.
An alloy contains metals X (molar mass 55.8 g mol\(^{-1}\)) and Y (molar mass 65.4 g mol\(^{-1}\)). A 10.0 g sample of the alloy is treated with excess dilute HCl. The reaction evolves 1.60 L of hydrogen gas at STP and the remaining solid (which is pure metal Y) weighs 6.0 g. Determine the mass percent of metal X in the original alloy.
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About This Question
This is Neco Model Questions Vol1 2025 Chemistry Question 34. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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