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11 June, 14:36

4.80 x 10^25 formula units pf calcium iodide (Cal2) will have what mass?

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  1. 11 June, 14:48
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    mass CaI2 = 23.424 Kg

    Explanation:

    From the periodic table we obtain for CaI2:

    ⇒ molecular mass CaI2: 40.078 + ((2) (126.90)) = 293.878 g/mol

    ∴ mol CaI2 = (4.80 E25 units) * (mol/6.022 E23 units) = 79.708 mol CaI2

    ⇒ mass CaI2 = (79.708 mol CaI2) * (293.878 g/mol) = 23424.43 g

    ⇒ mass CaI2 = 23.424 Kg
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