Iron is biologically important in the transport of oxygen by red blood cells from the lungs to the various organs of the body. in the blood of an adult human, there are approximately 2.64 × 1013 red blood cells with a total of 2.90 g of iron. on the average, how many iron atoms are present in each red blood cell? (molar mass fe = 55.85 g/mol)

Answer : The number of iron atoms present in each red blood cell are,

Explanation :

First we have to calculate the moles of iron.

Now we have to calculate the number of iron atoms.

As, 1 mole of iron contains number of iron atoms

So, 0.0519 mole of iron contains number of iron atoms

Now we have to calculate the number of iron atoms are present in each red blood cell.

Number of iron atoms are present in each red blood cell =

Number of iron atoms are present in each red blood cell =

Number of iron atoms are present in each red blood cell =

Therefore, the number of iron atoms present in each red blood cell are,

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

b is the correct answer

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