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Q: Can Hydrogen ignite in an atmosphere with 5 percent Oxygen?
A: Combustion The Space Shuttle Main Engine burnt hydrogen with oxygen , the formulation of an approximately unseen flame at full thrust . Hydrogen gas ( dihydrogen or molecular hydrogen ) [ thirteen ] is heavily combustible and will burn in air at a very wideer range of concentrations between four % and 75 % by volume . [ 14 ] The enthalpy of burning for hydrogen is −286 kJ/mol : [ fifteen ] 2 H2 ( g ) + O2 ( g ) → 2 H2O ( l ) + 572 kJ ( 286 kJ/mol ) [ note 1 ] Hydrogen gas forms explosives mixing with air if it 's 4–74.0 per cent concentrates and with chlorine if it 's 5–95 percent focused . The mixing spontaneously explode by spark , heating or sunshine . The hydrogen autoignition temperature , the temperature of spontaneous ignition in air , is 500 °C ( 932 °F ) . [ sixteen ] Pure hydrogen-oxygen flames emit uv lighting and represent approximately unseen to the nude eye , as illustrated by the faint plume of the Space Shuttle Main Engine compared with the highly noticeable plume of a Space Shuttle Solid Rocket Booster . The detection of a burn hydrogen leaking may be needed a flame detector ; such spillages is feasible to very , very dangerous . The devastation of the Hindenburg dirigible constitutes an notorious example of hydrogen burning ; the cause be discussed , but the noticeable flames were the resultss of flammable materials in the ship 's skin . [ 17 ] Because hydrogen is buoyant in air , hydrogen flames tends to ascend speedily and cause less harm than hydrocarbon fires . Two-thirds of the Hindenburg passengers was strong enough to survive the fire , as well as numerous deaths were instead the resultss of falls or incinerating diesel oil . [ 18 ] H2 react with every oxidising element . Hydrogen can respond spontaneously and violently at room temperature with chlorine and fluorine to form the corresponding hydrogen halides , hydrogen chloride and hydrogen fluoride , which 's also possibly hazardous acids . [ nineteen ]
Q: What are the pros and cons of using hydrogen energy?
A: Pros : Relatively easy response starting Usskills in power stations Relatively safe if operated properly Cons : comparatively rare fuel Radioactive byproducts Byproducts is feasible to utilized for weapons .
Q: Hydrogen Fueled Cars?
A: Hydrogen will burn fine in the motor of a ordinary gas powered r/c , with some alteration to the carburettor . You should take a look at the carb of a propane-powered engine , that serves to show you what you required to do . Hydrogen actually is necessary for be gaseous when you burn it . Simple compressed H2 will work , albeit for a short period . H2 will condense into a fluid if you cool it to -257 degrees F , or if you compress it to about one0,000 psi . I doubt if you are able make a vessel strong sufficiently to contain 10,000 psi that 's little sufficiently or lightweight sufficiently to is useful for an r/c automobile .