Select the quantity that has changed-velocity or speed--for a car that travels north at 88 km/h and then turns east while continuing to move at 88 km/h. Explain your answer.

Explanation:

I want the points

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.