How many atoms of iodine are in 12.75g of CaI2? Hint. How many Iodines are there in one CaI2 particle? (Answer) atoms of I (4 SF)

Explanation:

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In this case, since 12.75 g of calcium iodide has the following number of moles (molar mass = 293.89 g/mol):

In such a way, since 1 mole of calcium iodide contains 2 moles of atoms of iodine, and one mole of atoms of iodine contains 6.022x10²³ atoms (Avogadro's number), we compute the resulting atoms as shown below:

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