mauricelaw37
mauricelaw37 mauricelaw37
  • 15-01-2020
  • Chemistry
contestada

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

Respuesta :

gbustamantegarcia054 gbustamantegarcia054
  • 15-01-2020

Answer:

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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