Question

How many atoms of carbon are in 0.68 moles of carbon?

a) 6.022 × 10²³ atoms
b) 1.36 × 10²³ atoms
c) 4.08 × 10²⁴ atoms
d) 2.72 × 10²⁴ atoms

Answer 1

The number of atoms in 0.68 moles of carbon is 4.08 × 10²⁴ atoms.

Step-by-step explanation:

The number of atoms in a mole of a substance is equal to Avogadro's number, which is 6.022 × 10²³ atoms. To find the number of atoms of carbon in 0.68 moles of carbon, multiply the number of moles by Avogadro's number:

0.68 moles × 6.022 × 10²³ atoms/mol = 4.08 × 10²⁴ atoms

Therefore, the correct answer is option c) 4.08 × 10²⁴ atoms.