If you dissolve 14.08g of copper chloride in enough water to make 266 mL of solution, the concentration of the

solution is what?

Answer:
c(concentration)=n/V
n=m/M
c=m/VM

M(CuCl) = 46 g/mol

c = 14,08 g / 0,266L /46g/mol = 1,15 mol/L
_________________________

The other, longer, way is the same, but in two separate stages. You might find it easier:

First, you must get the number of moles by diving mass by molar mass.
n=m/v = 14,08g / 46 g/mol = 0,306 mol

You get concentration by dividing the number of moles by volume:
c= n/V = 0,306 mol / 0,266 L = 1,15 mol/L

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