Calculate the number of particles in each of the following

46g of Na

The number of particles present in one mole of any substance is has a fixed value of 6.022 × 10²³. This number is called Avogadro constant(N_A).

Mass of Na = 46g

Molar mass of Na = 23u

Apply the formula given below:

Number of particles = number of moles × 6.022 × 10²³

⇒

⇒

⇒ Number of particles = 2 × 6.022 × 10²³

^⇒ Number of particles = 12.046 × 10²³

Thus, 46g of Na contains 12.046 × 10²³ particles.