Question

Calculate the no. of particles in each of the following:
1. 92g Of Na atoms
2. 7g of N2 molecules
3. 0.1 mole of Oxygen atoms​

Answer 1

Answer:

1. Number of particles = given mass * N(A) / Molar Mass = 92* 6. 022*10^23/ 23 = 24.08 * 10^23

2. Number of particles = 7 * 6. 022*10^23/ 28 = 1.50 * 10^23

3. Number of particles = Number of moles * N(A)

Number of particles = 0.1* 6.022* 10^23 = 0.60 * 10^23