Answer:
One mole of carbon contains 6.02 × 10²³ atoms. This number is called Avogadro number. Then, the number of atoms in 4.31 moles of carbon is 2.59 × 10²⁴ atoms.
One mole of a substance is its amount containing 6.02 × 10²³ atoms or molecules. This number is called Avogadro number. One mole of all elements contains an Avogadro number of atoms.
Similarly, one mole of every compound contains 6.02 × 10²³ molecules. The mass of one mole of compound is called its molar mass.
C is the 6th element in the periodic table. C is a nonmetal. One mole of C contains 6.02 × 10²³ C atoms. Hence, the number of atoms of 6.53 moles is:
4.31 moles × 6.02 × 10²³ atoms/mol = 2.59 × 10²⁴ atoms
Hence, there will be 2.59 × 10²⁴ carbon atoms in 4.31 moles.