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).
Zn + 2HCl H 2 + ZnCl 2 B. What gas was produced by the reaction of zinc and hydrochloric acid? How did this gas behave in the presence of fire? The gas produced by the reaction of zinc and hydrochloric acid was hydrogen. In the presence of fire Hydrogen explodes with a popping sound.