chemisty question---391G of NH3 @ STP?
i dont understand this question.. Please help
Given: 391 g NH3 @ STP
Find: # of N atoms
# of H atoms
please help! thank you! SOOO much!
- 1 decade agoFavorite Answer
STP is standard temperature and pressure.
molecular wt of NH3 is 17.
so avogadro number of molecules of NH3 is present in STP.
so 17 gms of NH3 contains 6.022X10^22 N atoms
391 gms of NH3 contains..6.022X10^22X391/17 N atoms
17 gms of NH3 contains 3X6.022X1o^22 H atoms
391 contains 3X6.022X10^22X391/17 H atoms