The number of moles is labeled with n
n=2.8 moles
1 mole = 6.02 × 10²³atoms
This means that atom numbers can be calculated:
2.8 moles * 6.02 × 1023 atoms = 16.86 × 10²³ atoms
The mole is defined as the measurement unit for amount of substance. 1 mole contains exactly 6.02×10²³particles: atoms, molecules, ions or electrons.