Question

number of atoms in 0.5 mole of carbon atom

Answer 1

1 mole has Avogadro's no. of atoms
then 1/2=.5 moles have Na/2 atoms=3.011×10²³

Answer 2

Hi!

1 mole carbon contains 6.022 * $10^{23}$atoms

Therefore 0.5 mole carbon contains  3.011×10²³ atoms

This is your answer

Hope this helps !!!