If 7.08 g of CuNO3 is dissolved in water to make a 0.280 M solution, what is the volume of the solution in milliliters?

Answer 1

7.08 g of CuNO3 is equivalent to 7.08 g / 189.0 g/mole = 0.375 moles of CuNO3 (189.0 is the molecular mass of CuNO3).

Dividing this number of moles by the volume of the solution will give the molarity. We don't know the volume, so we can express the resulting molarity by 0.375 / V and set this equal to the given molarity, then solve for V.

0.375 g / V = 0.280 mole/L

V = 0.375 g 0.280 moles/L = 1.34 L

To get V in mL multiply1.34 L x 1000 mL/L = 1340 mL

Please check math.