using point group, differentiate the following pairs of molecules. State the associated symmetry elements for H - C = C - CH2Cl and H - C = C - H

petroleum? coal maybe?

3 hours because it is a decent distance.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.