How much heat is required to raise the temperature of 7.89 g of ethyl alcohol from 25.0 °C to 72.7 °C? A) 175 j
B) 1350 j
C) 240 j
D) 908 j​

a polar bond is formed when electrons are shared unevenly between atoms

what does the table look like

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.