Please help organic ?

what two atomic orbitals overlap to form C-H bond in ethylene which of the following alkenes has the smallest molar heat of hydrogenation trans-2-butene 2,3-dimethyl-2-butene 1-hexene 2-methyl-2-butene cis-2-butene which of the alkyl chlorides listed below undergowes dehydrohalogenation in the presence... show more what two atomic orbitals overlap to form C-H bond in ethylene

which of the following alkenes has the smallest molar heat of hydrogenation
trans-2-butene
2,3-dimethyl-2-butene
1-hexene
2-methyl-2-butene
cis-2-butene

which of the alkyl chlorides listed below undergowes dehydrohalogenation in the presence of a strong base to give pent-2-ene as the only alkene product
2-chloropentane
1-chloropentane
3-chloropentate
1-chloro-3-methylbutane
1-chloro-2-methylbutane

alkenes...
a) are reasonably soluble in water
b) have lower boiling point than alcohols of similar molecular weight
c) are relatively polar compouds
d) a and b
or none
2 answers