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At STP (Standard Temperature and Pressure: 1 atmosphere of pressure, 0oC), one mole of any gas will occupy 22.4 liters of space. One mole of any substance contains 6.02 x 1023 particles (similar to how a dozen is 12 of anything). Air is about 21% oxygen, depending upon your location and local biotic and abiotic factors.
So, at STP, 1 liter of air is about 0.21 liters of oxygen. To find out how many moles that represents, divide 0.21 by 22.4. Take that answer and multiply by 6.02 x 1023. It should be a very large number, on the order of 1021.
In 1 liter of air at room temperature and pressure, there are approximately 2.5 x 10^22 molecules of oxygen.
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What is concentration oxygen in air?
The concentration of oxygen in air is approximately 21%. This means that out of every 100 molecules in the air, around 21 molecules are oxygen. Oxygen is essential for respiration in many organisms, including humans.
What diffuses faster air or oxygen gas why?
Oxygen gas diffuses faster than air because oxygen molecules are smaller and lighter than the molecules of air, which is mostly composed of nitrogen and oxygen. This allows oxygen molecules to move more quickly through a medium, such as air or other gases.
Is there more oxygen in seawater or air?
There is more oxygen in seawater. Seawater contains around 5 to 10 milligrams of oxygen per liter, while the concentration of oxygen in the air is about 210 milligrams per liter. However, the total amount of oxygen in the oceans is much higher due to their vast volume.
Why the pressure of oxygen becomes low at high altitudes?
At higher altitudes, the air pressure decreases because the air molecules are more spread out. This reduction in pressure means there are fewer oxygen molecules available in the air to be breathed in, leading to lower oxygen levels at high altitudes.
What are 3 gases in the air which are molecules?
Oxygen (O2), nitrogen (N2), and carbon dioxide (CO2) are three gases in the air that exist as molecules. These molecules consist of two or more atoms bonded together.
How many out of 200 air molecules are oxygen?
Air is 21% oxygen so 21% of 200 is 42 oxygen molecules.
What is concentration oxygen in air?
The concentration of oxygen in air is approximately 21%. This means that out of every 100 molecules in the air, around 21 molecules are oxygen. Oxygen is essential for respiration in many organisms, including humans.
How many milliliters of nitrogen and oxygen are present in one liter of dry air?
20.95%oxygen and 78.08% nitrogen
What diffuses faster air or oxygen gas why?
Oxygen gas diffuses faster than air because oxygen molecules are smaller and lighter than the molecules of air, which is mostly composed of nitrogen and oxygen. This allows oxygen molecules to move more quickly through a medium, such as air or other gases.
What air molecules?
air molecules are , nitrogen , oxygen, and carbon dioxide mosly nitrogen (75%)
How many milliliters of nitrogen and oxygen are in a one liter sample of dry air?
In a one liter sample of dry air, there are approximately 780 mL of nitrogen and 210 mL of oxygen. Nitrogen makes up about 78% of dry air while oxygen makes up about 21%.
How much oxygen is in 1 liter of air?
Approx 180ml
Is there more oxygen in seawater or air?
There is more oxygen in seawater. Seawater contains around 5 to 10 milligrams of oxygen per liter, while the concentration of oxygen in the air is about 210 milligrams per liter. However, the total amount of oxygen in the oceans is much higher due to their vast volume.
Do air molecules have mass?
Yes, air molecules do have mass. Air is made up of various gases such as nitrogen, oxygen, and carbon dioxide, and each of these gas molecules contributes to the overall mass of the air.
What do people breathe?
Air: 78% nitrogen, 21% oxygen, 1% other. We breathe oxygen and other molecules.
How does the distance between the particles in atmospheric air compare to the size of the particles themselves?
Usually in a gas, the distance between molecules is larger.
Why the pressure of oxygen becomes low at high altitudes?
At higher altitudes, the air pressure decreases because the air molecules are more spread out. This reduction in pressure means there are fewer oxygen molecules available in the air to be breathed in, leading to lower oxygen levels at high altitudes.
