Question

how to find number of atoms present in 3.4 grams of NH3​

Answer 1

Answer:

Mass = 3.4 gm

molar mass = 17gm

Moles = 3.4/17 = 0.2

Number of particles = 0.2 * 6 * 10^23

= 1.2 *10^23 particles

total atoms = 4

= 4.8 *10^23 atoms