Carbon, and Hydrogen atoms.
A hydrocarbon.
C2H6 is the hydrocarbon ethane, and it has very low solubility in water. Most hyrdocarbons are like this. They're non-polar and so can't associate with the highly polar ends of the H20 molecules. Ethane would be soluble in a non-polar solvent such as benzene (C6H6).
catalytic converters are used to change the emissions of a car from carbon monoxide to carbon dioxide, basically it makes fumes safer but adds to climate change. It also changes oxides of nitrogen (NoX) to safer molecules, and uses up any left over hyrdocarbons.(HC).It is used to reduce harmful emissions from the exhaust system.
What you are smelling are the hyrdocarbons, which are the more damaging portions of gasoline to the environment. It may be a leak in the evaporative system, but being that you smell in in the rear of the car, it's probably the Charcoal Evap Cannister, or the hose leading to it. The cannister is responsible for filtering out hydrocarbons from evaporating gas before it hits the air. If it's dead or not working this would be the fumes you'd smell. The cannister about the size of a golf ball and is typically hanging at the top of the rear passenger fender well.
Made
"Made of" and "Made from" can mean the same thing. "That can is made from aluminum." "That can is made of aluminum." However, they can't be used the same in every situation. You can say: "That house is made of wood and made from workers." But you can't say: "That house is made of workers and made from wood."
It was made it was made on the Internet
it is man-made and made out of ponies
The Parthenon was made in Acropolis and Iktinos and Kallikrates made it.
He was made by the big bang
The oceans are NATURAL made.(made my nature).A building, some lakes, are MAN made.(made by man).
it depends on thesentence if the sentence is something like this ... she made it. then you would put made but if your sentence is this... had she made it?