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.
Interesting Facts about Chlorine. 1  Chlorine gas was used by the Germans in WWI to poison the Allied soldiers. 2  Around 1.9% of the ocean's mass is composed of chlorine atoms. 3  It has a high density for a gas of 3.21 grams per liter (air is around 1.29 grams per liter). 4  Chlorine is used to make chlorofluorocarbons or CFCs.