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. Natural Gas: Used for heating homes and running appliances such as water heaters and stoves. It contains methane (also known as swamp gas or marsh gas), which is a hydrocarbon. Methane occurs naturally in the earth's crust and is also formed by decaying organic matter such as manure or sewage.