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

Question

Chemistry

Angela Jarvis

22 February, 00:53

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

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Answers (1)

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Coralie · Answer 1

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