chemical analysis shows hemoglobin contains 0.34% of Fe by mass. How many moles of Fe wold be in a 100.00 g sample?
Thank you.
How much Fe is in the 100.00 g sample? Wouldn't that be 100.00 x 0.34 = ??
Now, how do you convert grams Fe to moles Fe?
0.608
To determine the number of moles of Fe in a 100.00 g sample of hemoglobin, we first need to convert the mass percentage of Fe to grams.
Given that hemoglobin contains 0.34% Fe by mass, we can calculate the mass of Fe in the sample as follows:
Mass of Fe = (0.34/100) × 100.00 g
= 0.34 g
Next, we need to convert the mass of Fe to moles. The molar mass of Fe is approximately 55.85 g/mol.
Number of moles of Fe = Mass of Fe / Molar mass of Fe
= 0.34 g / 55.85 g/mol
≈ 0.00608 mol (rounded to four decimal places)
Therefore, there would be approximately 0.00608 moles of Fe in a 100.00 g sample of hemoglobin.