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11 years ago
If isomers of an alkane have the same molecular formula, how do they differ?
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#1
11 years ago
they differ in their structure. the term is structural isomerism.
for eg, the alkane C4H10 has 2 isomers,

butane and 2-methylpropane. they only differ in the position of the carbon atoms.
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#2
11 years ago
there are 2 possibilities :
1. the only differ by the position of the double bond (e.g. 1-penthene and 2-penthene)
2. they can differ by the position of the a certain group (2-penthene and 2-methyl-2-buthene)
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#3
11 years ago
THey share a formula and some characteristics, relatively speaking. However, the actual number of carbon and hydrogen atoms affects the molecular mass, and several other qualities that make each one of them unique. methane cannot be used in an aerosol spray can, like you propane.
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#4
11 years ago
They have different properties. Even though they have the same molecular composition, they are technically a totally different substance.
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