A canister of oxygen has a volume of 3 L with a pressure of 780 mmHg and a temperature of 250K. A second canister of oxygen has a volume of 3 L and a pressure of 750 mmHg. In which canister do the oxygen molecules have higher kinetic energy? Why? Hint: You need to find out which canister has the highest temperature. Use combined gas law. (P1V1)/ T1 = (P2V2)/ T2

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.

the answers are

c and c