How many atoms in a 4.25 gm NH3
 

Asked by Ayan | 7th Apr, 2017, 01:11: AM

Expert Answer:

Molar mass of NH3 = 17 g
1 mol NH3 Ξ 6.023 × 1023 molecules of NH3
1 molecule of NH3 ≡ 4 atoms (1 atom of N + 3 atoms of H)
So, 6.023 × 1023 × 4 = 24.092 × 1023 atoms in 1 mole NH3
17 g NH3 Ξ 17 / 4.25 = 4 moles NH3
4 moles NH3 = 4 × 24.092 × 1023 atoms = 96.368 ×1023 atoms

Answered by Prachi Sawant | 7th Apr, 2017, 09:53: AM