10.23 If the atmospheric pressure is 0.995 atm, what is the pressure of the enclosed gas in each of the three cases depicted in the
drawing? Assume that the gray liquid is mercury.
Open end
Open end
Closed end
h
h
Gas
Gas
Gas
h = 52 cm
h = 67 cm
h = 10.3 cm
(i)
(ii)
(iii)

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.