Alkanes
The alkanes are the simplest form of organic compounds. They are made up of only Carbon atoms and Hydrogen atoms. All of the bonds are single and the number of hydrogen atoms versus carbon atoms follows this formula: CnH2n+2
Alkanes are all non-polar molecules so they aren't soluble in water. Here are some more facts. -Referred to as "Saturated" -They have
-low densities
-low melting points
-low boiling points -Refer to "Slide 29" sheet
We couldn't find any information on who discovered them. Or on the what, where, or when. However the first alkane that was discovered was probably methane. Because, of course, this is the gas that cows belch.
The journal of toxology report that a 15 year old boy was stricken with hemiparesis "resulting from acute intoxication following inhalation of butane gas." Hemiparesis is when half of a person's body is paralyzed. Through reactions alkanes can be transformed into chloroform. This has been shown to accumulate in lungs of swimmers after they swim for extended periods of time.
As mentioned above chloroform can be produced which can be used for anesthesia. Also dichloromethane, or paint stripper and 1,2-dichloroethane which is a dry cleaning fluid. Here is a sample reaction where a halogen replaces a hydrogen. CH4(g) + C12(g) ----> CH3Cl(g) + HCl(g)
There are many uses for alkanes, for instance: Propane is used in gas grills, butane is used in cigarette lighters, through various reactions scientists can make paint stripper, anesthesia or dry cleaning fluid. The
Pentanes and Hexanes are also highly flammable and make really cool explosions.
Heptane, octane and nonane make up gasoline. The "Octane Scale" on gas pumps uses a system which rates n-heptane at a 0 and isooctane at 100.
Currently propane gas is being studied to use it as a fuel for more
However, the atoms are arranged a little differently. Two molecules that have this type of relationship are called isomers.
There are four different types of hydrocarbons each having a different homologous series (formula for carbon chain). These being an alkane (formula = CnH2n+2), alkene (formula = CnH2n), alkyne (formula = CnH2n-2), and an alkanol which has the same formulae as an alkane only that is has a hydroxide molecule which replaces one of the hydrogen atoms (refer to figure 3 and
Fig 1: Applications of single molecule spectroscopy in solving scientific problems in Physics, Chemistry and Biology
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the left of a pair of crystals that are a mirror image of each other.
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Interview development is frequently the difference between success and failure. My personal experience on both being an interviewer and interviewee has helped me gain knowledge. This was an effective way to receive a comeback in an understanding environment. This assignment has helped me build confidence on how to be successful during an interview, how my strengths can recover my weaknesses, and how i can turn my biggest flaws into strengths.
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