Question

Convert 1.43 x 10^24 atoms of carbon to moles of carbon.

1.43 x 10^24 atoms= ________ mol C

Answer 1

We know,

1 moles of C = Avogadro number(NA) of carbon atom

=6.023×10^23 atoms of carbon

Hence,

6.023×10^23 atoms of carbon =1 mole C

1 atoms of carbon = 1/(6.023×10^23) mole C

1.43 x 10^24 atoms of carbon =(1.43 x 10^24 )/(6.023×10^23) moles C

= 2.274 mol. C

(Upto three significant decimal place)

Hence,

1.43 x 10^24 atoms= 2.274 mol C