A 0199-G Sample of Unknown Metal (X)reacts with Hydrochloric Acid to to Produce

question 148

Multiple Choice

A 0.199-g sample of unknown metal (X) reacts with hydrochloric acid to produce 88.5 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. ) X(s) + 2 HCl(aq) → XCl₂(aq) + H₂(g)

• A)Al
• B)Cd
• C)Fe
• D)Mg
• E)Zn

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