How many moles are there in 4.75g of magnesium chloride?

1 Answer
Meave60
Dec 17, 2015

There are #"0.0499 mol MgCl"# in #"4.75 g"#.

Explanation:

The molar mass (mass of one mole) of magnesium chloride, #"MgCl"_2"#, is #"95.211 g/mol"#. To calculate the number of moles of #"MgCl"_2"# in #"4.75 g"#, divide the given mass by the molar mass.

#4.75cancel"g MgCl"_2xx(1"mol MgCl"_2)/(95.211cancel"g MgCl"_2)="0.0499 mol MgCl"_2"# (rounded to three significant figures)

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