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6 Oct 2020

Tin metal (Sn) and purple iodine (I₂) combine to form orange, solid tin iodide with an unknown formula.

Sn metal + solid I₂ → solid Sn_xI_y

Weighed quantities of Sn and I₂ are combined, where the quantity of Sn is more than is needed to react with all of the iodine. After Sn_xI_y has been formed, it is isolated by filtration. The mass of excess tin is also determined. The following data were collected:

Mass of tin (Sn) in the original mixture 1.056 g

Mass of iodine (I₂) in the original mixture 1.947 g

Mass of tin (Sn) recovered after reaction 0.601 g

What is the empirical formula of the tin iodide obtained?

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