During the phase change process, was energy absorbed or released by the alcohol? Explain.
What can you conclude about the strength of the interactions between water
particles compared to the strength of the interactions between particles of the
alcohol? Use information from the table of values in part (d) above to justify
your answer.

i believe it is 40–40–20%

explanation:

1.solid

2.carbon dioxide

3.helium

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.