Jawapan

2016-09-13T21:34:54+08:00
For H2O 100°C, but for NH3 i dont know
2016-09-14T08:23:18+08:00
The boiling point for :
1. H₂O is 100ºC
2. NH₃ is -33.34ºC

Water is liquid, its boiling point must be positive. NH₃ is ammonia gas, it's already in gas phase, hence its boiling point is below 0 and that must be negative.