Convert 1.79 × 1024 atoms of carbon to moles of carbon.

Well one mole of carbon specifies 6.022×1023 INDIVIDUAL carbon atoms, i.e. a mole of carbon

And thus we take the quotient

1.35×1024⋅C⋅atoms6.022×1023⋅C⋅atoms⋅mol−1=2.24⋅mol

And what mass of carbon does this molar quantity represent? You should be able to answer pdq.

the answer is na (sodium)

b. is the answer hoped i