Story highlights. (CNN)The superintendent of the Tennessee school board where a teacher is accused of kidnapping student Elizabeth Thomas has made an appeal to his former employee. If Elizabeth is with you, bring her home, Maury County Public Schools Superintendent Chris Marczak told CNN on Thursday night.
For example methanol (race car fuel) (1 carbon 4 hydrogens 1 oxygen) burns with an almost invisible flame and acetylene (2 carbons 2 hydrogens (cutting torch without the oxygen turned on) burns with a bright yellow flame with clumps of soot raining down.
Hydrogen gas has the molecular formula H 2. At room temperature and under standard pressure conditions, hydrogen is a gas that is tasteless, odorless and colorless. Hydrogen can exist as a liquid under high pressure and an extremely low temperature of 20.28 kelvin (â252.87Â°C, â423.17 Â°F). Hydrogen is often stored in this way as liquid hydrogen takes up less space than hydrogen in its normal gas form. Liquid hydrogen is also used as a rocket fuel.