A molecule is a particle made up of two or more atoms that are chemically combined. True | False 6. Artificial elements are those elements that have been produced by nature without the intervention of man. True | False 7. The melting of ice cream is an example of physical change. ...
The hydrogen molecule, consisting of two hydrogen atoms, can be used to produce carbon-free energy. Hydrogen molecules carry a lot of energy; a pound of hydrogen contains almost three times the energy of a pound of gasoline or diesel. However, hydrogen molecules are not abundant on Earth, ma...
If you have ever pumped gas that claimed to "oxygenated" -- something that is common in most urban areas in the winter -- then you have used gasoline containing MTBE. MTBE is the acronym for methyl tertiary butyl ether, a fairly simple molecule that is created from methanol. Click here t...
What is the coldest gas? What is the charge of nitrogen gas? What is the phase rule in physical chemistry? What properties of a molecule would cause it to deviate more or less from the ideal gas law? What is sulfur hexafluoride's formula?
So, what is octane? It's a hydrocarbon molecule that gives gasoline the ability to resist detonating prematurely in the engine, which causes engine knocking or pinging during combustion. An octane rating measures the amount of the molecule that is in everyday gasoline. The higher the octane ...
Who can tell us what cellulose is? Alan? 谁可以告诉我纤维素是什么?Alan? Student: Cellulose. Yeah. It's a tough organic molecule made of simple sugars. 学生:纤维素。是的。这是一种由简单糖类构成的坚硬的有机分子。 It's found in the walls of all plant cells, in grass, trees, all plan...
What state of matter is natural gas? What is the difference between a gas and a liquid? Water is formed by which type of bond? What kind of molecule is water? What is the state of matter of water? How does hydrogen and oxygen bond to form water?
Gasoline is mostly a mixture of molecules such as octane: C8H18. Choose whether each of the following statements about what happens to the atoms in a molecule of octane when it burns inside a car is true (T) or false (F). T F Some of the atoms in the octane become part of carbon...
A hydrocarbon chain is a molecule that consists of entirely hydrogen and carbon. They are the simplest of the organic compounds and may be a liquid, gas or solid. There are many types of hydrocarbon chains, including alkanes, alkenes, alkynes, cycloalkan
It is now produced in immense quantities, chiefly by the distillation and purification of petroleum. It consists chiefly of several hydrocarbons of the methane series, having from 10 to 16 carbon atoms in each molecule, and having a higher boiling point (175 - 325° C) than gasoline or the...