Convert 1.61 x 10^24 atoms of carbon to moles of carbon

          Mole = 2.67

Given data:

          Number of atoms of carbon =  1.61 × 10²⁴

          Avogadro's Number = 6.023 ×  10²³

Required:

         Moles = ?

Solution:

                  Formula for calculating moles from particle numbers is given as,

                   Mole = Number of particle / Avogadro's number

putting values

                  Moles =   1.61 × 10²⁴ / 6.023 ×  10²³

                 Moles = 2.67