What is the molarity of 400 g of #CuSO_4# in 4.00 L of solution?

1 Answer
Nick
Aug 18, 2016

0.627 M

Explanation:

The molecular weight of #CuSO_"4"# is 159.609 g/mol, so 1 mole of #CuSO_"4"# weighs 159.609 g.

You have 400 g of #CuSO_"4"#, hence you have:

#"400 g" / "159.609 g/mol" = 2.5061243 " moles"#

This 2.5061243 moles is in 4 liters.

Molarity is moles per liter, so:

#"2.5061243 moles" / "4 liters" = 0.627 " Molar"#

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