Question

What is number of carbon atoms in 60g
pencil containing 60% graphite?​

Answer 1

Explanation:

60 g x 0.6 = 36 g of graphite

Graphite is an allotrope of carbon (C), so there would be 36 g of C.

moles of C = 36 g x 1 mole/12 g = 3 moles of C

no of atoms = 3 moles C x 6.02x1023 atoms/mole = 1.8x1024 atoms of C