An element X forms an iodide 1XI32 and a chloride 1XCl32.
The iodide is quantitatively converted to the chloride when
it is heated in a stream of chlorine:
2 XI3 + 3 Cl2¡2 XCl3 + 3 I2
If 0.5000 g of XI3 is treated with chlorine, 0.2360 g of XCl3 is
obtained. (a) Calculate the atomic weight of the element X.
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