Final answer:
The student's question about the volume of a solution containing magnesium nitrate cannot be answered directly as it requires the molarity of the solution, which is not provided. To find the volume, one would need to first calculate the number of moles from the given mass and then divide it by the molarity of the solution.
Step-by-step explanation:
The student's question asks about the volume of a solution containing a certain mass of magnesium nitrate. To calculate the volume in liters of a solution that contains 45 grams of Mg(NO3)2, one would typically use the molarity of the solution. However, the question provides the mass of the solute but not the molarity or the volume from which the solution was made.
To proceed, we need the molarity, which is not provided in the question. If we had the molarity, we could use the formula:
Molarity (M) = Moles of solute / Volume of solution in liters
From this, we could rearrange to find the volume with:
Volume in liters = Moles of solite / Molarity
First, we convert the mass of Mg(NO3)2 to moles by using its molar mass, and then divide it by the molarity to find the volume in liters.