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).
Seealso the entry for pyrolysis.Producer gas A gas mixture containing carbon monoxide (CO),hydrogen (H 2), carbon dioxide (CO 2) and nitrogen(N 2). In the USA, producer gas is a generic termreferring to wood gas, town gas, synthesis gas,syngas or raw gas.