How to calculate amount of Fe in a vitamin tablet
Using the equation from the standards I obtained I calculated the concentration of the unknown to be
C =1.941x10^6 mol/L.
DF=100
Vtotal = 100mL
MWFe = 55.845g/mol
mass of sample = 1.4375g
1.941x10^6mol/L x100
= 1.941x10^4 mol/L x 0.1L
= 1.941x10^5 mol x 55.8452g = 1.08mg
This is what I calculated so far but I don't think I did this correctly. I am not sure if I should use the mass of the sample. I noticed online that others use the total mass of the tablet however for us the tablet was already crushed so we used everything in the vial, 1.4375g. So I am not sure what to do now.
I would greatly appreciate the help. Thank you.
