Answer
Therefore there are $ 19.07 \times 10^{20}$ atoms of Carbon
Work Step by Step
Number of mole = $\frac{mass}{molar mass} = \frac{38 \times 10^{-3}}{12} = 3.167 \times 10^{-3} $ moles
1 mole = $6.022 \times 10^{23}$ atoms
number of atoms = (number of moles) $\times (6.022 \times 10^{23})$ = $(3.167 \times 10^{-3}) \times (6.022 \times 10^{23})$
= $ 19.07 \times 10^{23}$ atoms
Therefore there are $ 19.07 \times 10^{20}$ atoms of Carbon