Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Stoichiometry
Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "elem…
Question

An element X has a dibromide with the empirical formula XBr2 and a dichloride with the empirical formula XCl2. The dibromide is completely converted to the dichloride when it is heated in a stream of chlorine according to the reaction

XBr2 + Cl2→ XCl2 + Br2

When 1.500 g XBr2 is treated, 0.890 g XCl2 results.
(a) Calculate the atomic mass of the element X.
(b) By reference to a list of the atomic masses of the elements, identify the element X.

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