If 2.76 g of CuNO3 is dissolved in water to make a 0.350 M solution, what is the volume of the solution?

I can't remember any of the weights of the individual elements but here is how you solve it:

Molecular weight of copper + nitrogen + 3 oxygens = molecular weight of the compound.

M = moles / liter

.350 moles / 1 liter

Do. 350 moles / liter x the molecular weight (g / mole) of the compound = the answer in g / L