If your 250ml of cereal solution which came from the digestion of a 2.005g sample of cereal had 3.781 mg Fe in it, what is the mass of the Fe per gram of cereal??

3.781 mg Fe/2.005g cereal = ?mg Fe/g

To determine the mass of Fe (Iron) per gram of cereal, we need to calculate the concentration of Fe in the cereal solution. This can be done by dividing the mass of Fe by the volume of cereal solution.

First, we need to convert the mass of Fe and volume of cereal solution to the same units.

Given:
Mass of Fe = 3.781 mg
Volume of cereal solution = 250 mL

To convert milligrams (mg) to grams (g), we divide by 1000.
3.781 mg = 3.781/1000 g = 0.003781 g

To convert milliliters (mL) to liters (L), we divide by 1000.
250 mL = 250/1000 L = 0.25 L

Next, we can calculate the concentration of Fe in the cereal solution:

Concentration of Fe = mass of Fe / volume of cereal solution
Concentration of Fe = 0.003781 g / 0.25 L

Now, to find the mass of Fe per gram of cereal, we need to divide the concentration of Fe by the mass of cereal.

Given:
Mass of cereal = 2.005 g

Mass of Fe per gram of cereal = Concentration of Fe / Mass of cereal
Mass of Fe per gram of cereal = (0.003781 g / 0.25 L) / 2.005 g

Now, we can solve this equation to find the answer.