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,

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.