A 0122-G Sample of Unknown Metal (X)reacts with Hydrochloric Acid to to Produce

question 46

Multiple Choice

A 0.122-g sample of unknown metal (X) reacts with hydrochloric acid to produce 77.5 mL of "wet" gas at 20 °C and 754 mm Hg.What is the unknown metal (X) ? (The vapor pressure of water at 20 °C is 18 mm Hg. )
2 X(s) + 6 HCl(aq) → 2 XCl3(aq) + 3 H₂(g)

• A)Al
• B)Cr
• C)Mn
• D)Ni
• E)Ga

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