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zalisa [80]
3 years ago
7

Answer fast my H.W is hard

Chemistry
1 answer:
Marina86 [1]3 years ago
3 0

<u>Answer:</u> The molality of MgF_2 solution is 4.013 m

<u>Explanation:</u>

Molality is defined as the amount of solute expressed in the number of moles present per kilogram of solvent. The units of molarity are mol/kg.

The formula used to calculate molarity:

     .....(1)

Given values:

Given mass of MgF_2 = 20.0 g

Molar mass of = 62.3 g/mol

Mass of solvent = 80.0 g

Putting values in equation 1, we get:

\text{Molality of }MgF_2=\frac{20.0\times 1000}{62.3\times 80.0}\\\\\text{Molality of }MgF_2=4.013m

Hence, the molality of MgF_2 solution is 4.013 m

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