What’s the molarity of a solution formed by adding water to 35 grams of copper (II) sulfate (CuSO4) until you have a final volume of 750 mL?
Solution: Molarity = moles of solute/ L of solution
We first need to convert grams of copper (II) sulfate to moles using molar mass.
35gCuSO4 ( 1mol/159.609 g) = 0.21929mol
Next we convert milliliters to liters. 750ml/1000 = 0.750L
Molarity = 0.21929mol/ 0.750L = 0.29M