At rest, the average adult inhales around 20 percent oxygen in the air and exhales about 15 percent oxygen, according to HowStuffWorks. People inhale and exhale approximately 7 or 8 liters of air each minute or 11,000 liters per day.Know More
HowStuffWorks states that 5 percent of the volume of air is consumed each time a person inhales and is converted to carbon dioxide. Thus, a person uses around 550 liters of pure oxygen daily. Dr. Dawn A. Tamarkin of the Springfield Technical Community College explains that the normal amount of air breathed in and out at rest is called the tidal volume of air. The maximum amount of air a person can inhale and exhale is known as the vital capacity. A person normally does not use his entire vital capacity. When speaking or being active, a person takes in and lets out more air than the tidal volume.
The body only uses air when there is gas exchange, which occurs in the alveoli, notes Dr. Tamarkin. Upon inhaling, a person takes air into the respiratory system, and the air travels into the alveoli. Some air remains in the nasal cavity, trachea, bronchi and bronchioles to avoid creating a vacuum. The air stays in the respiratory passageways, and it cannot be used by the body.Learn more about Biology
Plasma is an ionized gas that contains free-flowing ions, and is composed of electrically charged atoms and electrons, which are negatively charged particles, according to Tom Harris for HowStuffWorks. Plasma has been energized to the point that some of the electrons break free but still travel within their nucleus. All gases have the potential to become plasma, but it is the energy infusion into a gas that ultimately creates plasma.Full Answer >
Under excellent conditions, a human in decent physical shape can live up to five days without water, according to HowStuffWorks. A human in even better shape may survive another 24 hours or more.Full Answer >
Oxygen scavengers are chemical compounds used to evacuate the oxygen in an environment. This is done to prevent the corrosion of ferrous metals used in machinery and to control the growth of pests and microorganisms in foodstuffs.Full Answer >
Plants take in carbon dioxide and expel oxygen through photosynthesis, while animals breathe in oxygen and expel the carbon dioxide. Known as the oxygen cycle, this mirrored use of carbon dioxide and oxygen does have a few exceptions.Full Answer >