Daylight Hours: 9 hours, 11 minutes (-8m 42s). The Sun's altitude in Tromsoe tromsÃ¸. Today the horizontal line signifies the, horizon the vertical lines show the times of sunrise and. Sunset altitude and heading are displayed in the box on the. right
Hydrogen cyanide (HCN), sometimes called prussic acid, is an organic compound with the chemical formula HCN. It is a colorless, extremely poisonous and flammable liquid that boils slightly above room temperature, at 25.6 Â°C (78.1 Â°F).
Chlorine Gas - Facts, Danger & Safety. The chlorine element, under normal atmospheric conditions, is a pale green gas with a density significantly greater than that of air. For this reason the substance may pool at the base of poorly ventilated areas. Chlorine is a highly toxic hazardous chemical produced and used in large volumes throughout many industries.