The ammonia gas, having a lower molecular weight than the hydrogen chloride, will diffuse faster and travel a greater length of the tube. Consequently, the white ring of ammonium chloride will form much closer to hydrochloric acid end of the tube. Which in conclusion your answer will be D :)
The groups (left to right) are numbered from 1 to 18. they arent numbered any other way.
period (up to down.) are numbered from 1-7
The answer is decomposition, ocean release and respiration. hope this helps u :D
