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Answered

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how do you write the names and molecular formulas of straight chain alkanes
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Sagot :

Kalyqt28idn

Naming and writing structural and molecular formulas for the straight-chain alkanes is straightforward. The name of each alkane consists of a prefix that specifies the number of carbon atoms and the ending -ane. The molecular formula follows the pattern of CnH2n+2 where n is the number of carbons in the chain.

Jannajoydidn

Answer:

To name straight chain alkane

Identify the number of carbon atoms in the chain then use the following affixes

meth for ony 1 carbon

eth for alkane with 2 carbon atoms

prop for alkane with 3 carbon atoms

but for alkane with 4 carbon atoms

pent for alkane with 5 carbon atoms

hex for alkane with 6 carbon atoms

hept for alkane with 7 carbon atoms

Oct for alkane with 8 carbon atoms

non for alkane with 9 carbon atoms

Dec for alkane with 10 carbon atoms

then attach to the affix the ending 3 letters ane.

To write the formula:

Following the name of given alkane it will tell you the number of carbon that you need to write.

Write the carbon in a straight chain and in between carbon write a dash which represents the bond, and on the terminal carbon attach 3 hydrogen atoms and on each carbon which are non terminal attach to it 2 hydrogen atoms.

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