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# The formula for sodium iodide is NaI. 1. How many GRAMS of sodium iodide are present in 6.07E+21 formula units of this compound ?

The formula for sodium iodide is NaI.
1. How many GRAMS of sodium iodide are present in 6.07E+21 formula units of this compound ? _____ grams
2. How many formula units of sodium iodide are present in 9.54 grams of this compound ? _____ formula units

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After working on your question, I... View the full answer NaI
Mass of NaI = 23 + 126.9
= 149.9
a)
6.022 x 10^23 unit contains 149.9 g
Hence 6.07 x 10^21 = (149.9*6.01 x 10^21)/6.022 x 10^23
= 1.51 gram b)
149.9 gram contains 6.022 x 10^23 units
Hence 9.54...

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