Question

in a 34g of NH3 gas sample find: i) number of molecules present ii) number of H-atoms present iii)volume occupied (Atomic masses of N is 14g and H is 1g) ​

Answer 1

Answer:

hi there.

atomic wt of NH3 = 14+3=17 g

number of moles in 17g is 1 mole

number if moles in 34 g will be 1×2=2 moles.

ii) in 17g 1 atoms is present

hence in 34 g, 2 ×6.023×10 •23atoms

iii). volume occupied by 17 g is 22.4 L at stp

hence at 34 g it will be 22.4×2=44.8L.

i hope this helps.

regards