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

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Answer 1 · 2016-08-18T11:45:31

0.627 M

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:

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

What is the molarity of 400 g of CuSO_4CuSO_4 in 4.00 L of solution?