Select the following statements that are true. select all that apply.
a. hydrocarbons contain only c and h atoms.
b. names of organic compounds consist of a root for the longest chain, a prefix for any attached group, and a suffix for the type of compound.
c. isomers are compounds with the same molecular formula but different properties.
d. alkynes contain single bonds; alkenes triple bonds and alkanes double bonds.
e. the longer the carbon chain the lower the molar mass and the lower the intermolecular contact, the lower the dispersion forces.