A sample of 1.25 mol of oxygen, 02, is placed in a 5.00-L cylinder at 300 K. What is the pressure inside the container? (R = 0.08215 L atm/mol K)
154 atm
30.8 atm
6.16 atm
0.162 atm

i think it is d. e because the next one is igneous.

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.