If 6.35 g of cu(no3)2 is dissolved in water to make a 0.750 m solution, what is the volume of the solution (in ml)?

First, we need to find out how many moles we have of  if we are given 6.35g.

We need to calculate the molar mass of the molecule:

Cu: 63.546g
N: 14.01g * 2 = 28.02g
O: 15.999g * 6 = 95.994

Add them together to get: 187.56g

So now we need to find the number of moles we are given. This can be done by setting up a multiplication equation and cancelling the units:



So now that we know the number of moles that we have, we can use the molarity equation to find the volume of the solution. The molarity equation is:



So since we are given the molarity in the equation (0.750 M), we can plug in the molarity and moles to find the volume of the solution:





So now we know that the volume is 0.04533 Liters; however the question asks for the answer in milliliters. To do this, we must multiply by 1000:



So the volume of the solution (in mL) is 45.33 mL.

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