questionedithistorytranslationsWhat is the valence of an oxygen?18321040368452Oxygen has two valence electrons so its valence is two. In water one oxygen molecule connects with two monovalent hydrogene molecules hence H2O.Share and bring new players to the game!correct this questionNinjaireach: rather globalchemistryoxygenHugo Cliffwikipedia → OxygenChemistry quizDoes the candle burn more or less violently in zero gravity?Less violently. In zero gravity no convection occurs, that normally shapes the flame, disperses CO2 and brings fresh air to the wick. Without convection, CO2 from combustion does not disperse as readily and tends to smother the flameWhat color is octopus blood?Blue. Both squids and octopuses have blue blood. They use an oxygen-carrying molecule in their blood called hemocyanin that contains copper. In cold conditions with low oxygen pressure, hemocyanin oxygen transportation is more efficient than hemoglobin oxygen transportation.What is the main difference between Coca-Cola sold in the US, and the Coca-Cola sold in the EU?Sugar. In the United States, Coca-Cola uses high-fructose corn syrup instead of sugar (sacharose) as its main sweetener. There is a small production of sugar-based "Kosher for Passover" Coca-Cola, as Ashkenazi Jews do not consume high fructose corn syrup during Passover.Where is the longest bridge in the world?In China. Quingdao Haiwan Bridge is 42 km long and 35 m wide, what makes it the longest bridge in the world.