Chlorine gas turns moist starch iodide paper blue-black.
Dry gas exerts more pressure than moist gas because water vapor in moist gas occupies space between gas molecules, reducing the frequency of collisions between gas molecules and the container walls. The presence of water vapor reduces the effective number of gas molecules hitting the container walls, resulting in lower pressure compared to dry gas.
The exchange surfaces are moist.
The gases are to dissolve and diffuse through.
Oil it!! and if necessary, keep oiling it :)
Surfactant
Colorless , but exposure to moist air gives white fumes.
Amphibians.. because they exchange gas partly through their skin, so gases must be able to move in and out - Their skin's got to be permeable and moist.
Nitrogen gas (N₂) does not change the color of moist red litmus paper. This is because nitrogen is a neutral gas that does not have acidic or basic properties. Therefore, it will not cause any color change in the litmus paper.
they are connected to a densed network of blood vessels which keeps the oxygen moist
When the solid pelets were exposed to a warm, moist enviroment they would sublimate, which is why in winter the Germans had to provied portable heaters into the gas chambers.
A maritime tropical air mass would most likely be moist and warm, as it originates over warm ocean waters.