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).
Natural gas is an energy source often used for heating, cooking, and electricity generation. It is also used as fuel for vehicles and as a chemical feedstock in the manufacture of plastics and other commercially important organic chemicals.atural gas is found in deep underground rock formations or associated with other hydrocarbon reservoirs in coal beds and as methane clathrates. Petroleum is another resource and fossil fuel found in close proximity to, and with natural gas.