because the molecules in a gas have no fixed position relative to one another and can move freely.
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High pressure and low temperature (but not near freezing).
Oxygen (O2) diffuses the fastest in and out of body tissues due to its small size and high solubility. It is crucial for cell respiration and energy production in the body.
Water will evaporate at the fastest rate under hot and dry atmospheric conditions because high temperatures increase the kinetic energy of water molecules while low humidity levels reduce the air's capacity to hold water vapor. This combination creates a strong driving force for evaporation.
Lower the pressure and higher the temperature, faster is the evaporation. Therefore, in vacuum and at the temperature just below decomposition point of the substance, its evaporation shall be fastest.
Sound travels fastest in air at around 343 meters per second (m/s) at room temperature (around 20 degrees Celsius). However, the speed of sound in air can vary depending on the temperature and humidity of the air.