What is the chemical formula for Ethane, Propane, and Octane?

Question

Please feel free to include the melting point, and boiling point all in Celsius please.Thanks

Answer 1

Ethane: C2H6, melting point -182.76 C boiling point -88.6 C

Propane: C3H8, melting point -187.6 C boiling point -42.06 C

Octane: C8H18, melting point -57 C boiling point 125.5 C

Answer 2

Alkanes, like ethane, propane, and octane, are named by there length. The prefixes and the corresponding number of carbons are:
Meth- 1
Eth- 2
Prop- 3
But- 4
Pent- 5
Hex- 6
Hept- 7
Oct- 8
Non- 9
Dec- 10
(there are more but that is too much detail)

Each of this number of carbon atoms are connected in a line and each atom has 4 bonds. All bonds that are not filled with other carbon atoms are filled with hydrogen atoms.
So now anyone can figure out the chemical formula for themselves.
The smaller alkanes have the highest boiling and freezing points, while the larger they get the lower these points become.

Answer 3

this wikipedia site tells you more about the alkanes (that is methane, ethane, propane, butane, etc-ane) than you want to know (including a table with chemical formulas)

http://en.wikipedia.org/wiki/Alkanes

this site will give lyou boiling points for many alkanes

http://dwb.unl.edu/calculators/pdf/hydroboil.pdf#search='boiling%20point%20propane%20ethane'

the melting points of these materials is so low that it is irrelevant in almost every circumstance

Answer 4

Ethane - C2H6, Propane - C3H8, Octane - C8H18