What is the chemical formula of pentane?
Q: What is the chemical formula of pentane?
A: The chemical formula of pentane is C5H12.
Q: How many carbon atoms does pentane have?
A: Pentane has five carbon atoms.
Q: Does "pentane" refer to all three isomers in general terms?
A: Yes, usually "pentane" refers to all three isomers (n-pentane, isopentane and neopentane).
Q: Does the IUPAC use a different definition for pentane than what is used generally?
A: Yes, in the IUPAC, pentane only represents n-pentane. The other two isomers are 2-methylbutane and 2,2-dimethylpropane.
Q: Is cyclopentene an isomer of pentene?
A: No, cyclopentene's chemical formula is C5H10 so it is not an isomer of pentene.