Question

L. Calculate the number of molecules in 51 grams of ammonia (NH3) explain with 9th method ​

Answer 1

Answer:

Molecular weight of ammonia in grams=17gm/mol (14gm/mol of Nitrogen +3×1 gm/mol of hydrogen)

Weight of molecules in the question is =51gm

No.of moles of ammonia=51gm/17gm/mol

=3mol

No. Of molecules of ammonia in 3mole =3×6.023×10²³

=18.069×10²³ molecules of NH3

Hope this will help you...