Question

sample of vitamin C is known as to contain 2.58 oxygen atom. how many mooes of oxygen atom are present in the sample

Answer 1

6.022*10 raise to 23=1 mole of oxygen atom
1 oxygen atom=1/6.022*10 raise to 23 moles of oxygen atoms
2.58  oxygen atom=2.58/6.022*10 raise to 23 moles of oxygen atoms
=4.28