A sample of a substance with the empirical formula XCl2 weighs 0.5555 g. When it is...

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Chemistry

A sample of a substance with the empirical formula XCl2 weighs0.5555 g. When it is dissolved in water and all its chlorine isconverted to insoluble AgCl by addition of an excess of silvernitrate, the mass of the resulting AgCl is found to be 1.1681 g.The chemical reaction is XCl2 + 2 AgNO32AgCl + X(NO3)2

(a) Calculate the formula mass ofXCl2.



(b) Calculate the atomic mass of X.

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