Asample of gas has a pressure of 3.6 atmospheres at a temperature of 301 kelvin. what would be the pressure of the same sample of gas when the temperature is decreased to 285 kelvin? show all of the work used to solve this problem.

Answer is: pressure is 3,40 atm
Gay-Lussac's Law states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature.
p₁/T₁ = p₂/T₂.
p₁ = 3,6 atm.
T₁ = 301 K.
p₂ = ?.

T₂ = 285 K.

3,6 atm/301 K = p₂/285 K.
3,6 atm · 285 K = 301 K · p₂.

p₂ = 1026 atm · K ÷ 301 K.

p₂ = 3,4 atm

it's all four options.

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.