Question

if a person inhales 6L of air per minute and this contains 21% of O2. How many liters of oxygen will be inhaled?

Answer 1

Breathing

Breathing is the process by which we take oxygen from the air and expel carbon dioxide from our body.

In the breathing process, air enters through the nostrils, where it is heated, humidified and filtered, or it can also do so through the oral cavity. Then goes through the pharynx, larynx and trachea, where it also filters particles and liquid.

From the trachea come two ducts, the bronchi, which are the ones that connect with the lungs. Inside the lungs, the bronchi branch out into smaller formations called bronchioles, and at the end of the bronchioles are the alveoli.

In the alveolis is where the gas exchange takes place, by a diffusion process. Oxygen-rich air enters the blood stream, and air loaded with carbon dioxide exits, to be expelled through the same airway.

The air

Now, we don't just inhale oxygen when we breathe. The composition of the air is approximately 78% Nitrogen, 20.9% Oxygen, and the rest of carbon dioxide, noble gases, and other inert species, pollutants and solid particulate matter.

If assumpt a 21% of oxygen content, it means that of each part of the air we inhale, 0.21 correspond to oxygen.

Let's calculate

To determine the inhaled oxygen quantity in a given air volume or air flow, it is enough to calculate 21% of this amount of air

$V_{oxigen}=0.21*V_{total}\\V_{oxigen}=0.21*6l\\V_\\oxigen}=1.26 l$

So if a person inhales 6 liters of air per minute, that person would be inhaling 1.26 liters of oxygen.

more about air https://brainly.lat/tarea/23458030

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