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Can I solve this problem without knowing any starting amounts?

An element $\ce{X}$ forms iodide ($\ce{XI3}$) and chloride ($\ce{XCl3}$). The iodide is quantitatively converted to the chloride when it is heated in a stream of chlorine:

$$\ce{2 XI3 + 3Cl2 -> 2XCl3 + 3I2}$$

Calculate the atomic mass of $\ce{X}$. Identify element $\ce{X}$.

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  • $\begingroup$ Hi and welcome to chemistry.stackexchange.com. Feel free to take a tour of the site. I improved the formatting of your post using MathJax. More information on how to do so yourself can be found in the help center and this meta post. $\endgroup$ – Jan Oct 19 '15 at 12:27
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    $\begingroup$ Also, the problem is not solveable without the masses of reactant and product. $\endgroup$ – Jan Oct 19 '15 at 12:27

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