Answer:
5.36 x 10²⁴ atoms C
Explanation:
1 mole of any substance contains 6.02 x 10²³ particles of the substance. So, 8.9 mole Carbon would contain 8.9 moles x 6.02 x 10²³ atoms C/mole => 5.36 x 10²⁴ atoms of Carbon.