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A sample of a substance with the empirical formula XBr2 weighs 0.5210 g. When it is...

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Chemistry

A sample of a substance with the empirical formula XBr2 weighs0.5210 g. When it is dissolved in water and all its bromine isconverted to insoluble AgBr by addition of an excess of silvernitrate, the mass of the resulting AgBr is found to be 0.6586 g.The chemical reaction is XBr2 + 2 AgNO32AgBr + X(NO3)2

(a) Calculate the formula mass of XBr2. Formula mass XBr2 = gmol-1

(b) Calculate the atomic mass of X. Atomic mass X = g mol-1

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The balanced chemical reaction is as followsXBr2 2AgNO32 AgBr XNO32Mass of sample of XBr2 05210gMass of AgBr precipitate 06586 gDetermine the number of moles of AgBr as    See Answer
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