#"Does a solid?"##"Nope"#. #"Does a liquid?"##"Not totally."#
Explanation:
#"But does a gas?"#
Yes indeed they does. And #"Dalton's Law of Partial Pressures"# states that in a gaseous mixture, the pressure exerted by a component gas, is the same pressure it would exert if it ALONE occupied the container. Partial pressures of component gases thus add together to give the total pressure.