# Determining the Mass of FeCl2 in a Solution

## What mass of FeCl2 is present in 445 mL of 0.0812 M FeCl2 solution?

How to calculate the mass of FeCl2 in the solution?

## Final answer:

The mass of FeCl2 in the solution is found by using the moles = Molarity x Volume equation.

## Explanation:

The student's question pertains to determining the mass of FeCl2 (Iron(II) chloride) in a solution with a known volume and molarity. The solution to finding the mass of the solute in a solution is by using the formula: moles = Molarity x Volume. Here, the molarity (M) is 0.0812 M and the volume (V) is 445 mL or 0.445 L (since molarity is defined in terms of liters). Now, multiplying these values gives the number of moles of the FeCl2. Then, the mass in grams can be calculated by multiplying the number of moles by the molar mass of FeCl2 (which is around 126.75 g/mol).

To determine the mass of FeCl2 in a solution, you first need to calculate the number of moles of FeCl2 present. This can be done using the formula: moles = Molarity x Volume. In this case, the molarity is 0.0812 M and the volume is 445 mL, which is equivalent to 0.445 L. By multiplying these values, you will get the number of moles of FeCl2 in the solution.

Next, to find the mass of FeCl2 in grams, you will need to multiply the number of moles obtained in the previous step by the molar mass of FeCl2. The molar mass of FeCl2 is approximately 126.75 g/mol. By multiplying the number of moles by the molar mass, you will be able to determine the mass of FeCl2 present in the solution.

Therefore, by following these steps and calculations, you can accurately determine the mass of FeCl2 in a solution with a molarity of 0.0812 M and a volume of 445 mL.