Question: Question Content Area Use the References to access important values if needed for this question. A sample of a substance with the empirical formula XCl

Question Content Area

Use the References to access important values if needed for this question.

A sample of a substance with the empirical formula XCl₂ weighs 0.4523 g. When it is dissolved in water and all its chlorine is converted to insoluble AgCl by addition of an excess of silver nitrate, the mass of the resulting AgCl is found to be 0.9985 g. The chemical reaction is

XCl₂ + 2 AgNO₃2AgCl + X(NO₃)₂

(a) Calculate the formula mass of XCl₂.

Formula mass XCl₂ = ???? g mol^-1

(b) Calculate the atomic mass of X.

Atomic mass X = ???? g mol^-1

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