Pharaoh definition, meaning, English dictionary, synonym, see also 'Pharaoh ant',Pharaoh's ant',Pharaoh ant',Pharos', Reverso dictionary, English definition, English vocabulary Translation Context
The intake to this ventilation. system must be near the floor. (Chlorine as a gas is. 2.5 times heavier than air.) Exhaust Rate The exhaust system must be able to exchange the air. in the room every three to four minutes.
What chlorine is. 1  Chlorine is an element used in industry and found in some household products. 2  Chlorine is sometimes in the form of a poisonous gas. 3  Chlorine gas can be recognized by its pungent, irritating odor, which is like the odor of bleach.  Chlorine gas appears to be yellow-green in color.