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Reacting arsenic metal with arsenic triiodide

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The compound As2I4 is synthesized by reacting arsenic metal with arsenic triiodide (AsI3). If a solid cubic block of arsenic (density = 5.72 g/cm^3) that is 3.00 cm on edge is allowed to react with 1.01 x 10^24 molecules of arsenic tiiodide, how much As2I4 can be prepared?
As + AsI3 ---- As2I4

If the % yield of As2I4 was 75.6, what mass of As2I4 was actually isolated?

Reference no: EM13910587

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