Question

Calculate the no. Of iron in a piece iron waiting 2.8g

Answer 1

If this means that no. Of moles of iron atom,then the answer should be 3.01×10^22 mol.
How?
Like this:

Answer 2

Answer:

For the treatment of iron deficiency anemia in adults, 100 to 200 mg of elemental iron per day has been recommended. The best way to take the supplement so that you absorb the greatest amount of iron is to take it in two or more doses during the day. However, extended-release iron products may be taken once a day