Oxygen comprises 20.946% of air...
therefore, the amount of air that contains 450mL of oxygen is:
(450mL) / (20.946%) = (450mL) / (0.20946) = 2148mL
Paying attention to significant figures (3) the final answer is 2.15 L of air.
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Some teachers simplify the composition of air to contain only 20% oxygen.
If this is the case your answer becomes 2.25L of air.
Divide 225ml by 20.9, then multiply by 100.
19.5% to 23.5%
No, air contains about 21% oxygen, while ocean water contains only about 5-10 milliliters of dissolved oxygen per liter. The higher concentration of oxygen in the air makes it easier for animals to extract the oxygen they need for respiration.
if this is math and your asking what gas has a percent by volume 78.09 it is nitrogen
Inhaled air contains a greater volume of oxygen than carbon dioxide. Exhaled air is the opposite, since after the exchange of gases in the lungs the carbon dioxide in the blood is transferred into the lungs. Exhaled air contains a greater volume of carbon dioxide than oxygen. Also, there is more water vapour in exhaled air than inhaled air.
Air typically contains about 21% oxygen by volume.
Divide 225ml by 20.9, then multiply by 100.
Air has more oxygen compared to an equal volume of water. Air is composed of approximately 21% oxygen, while water contains dissolved oxygen, but in much lower concentrations, usually around 5-8 parts per million.
A small percent . exhaled air always contains oxygen .
19.5% to 23.5%
yes.you need more air,as the candle will burn for longer in a bigger volume of air because the air contains oxygen which is needed for combustion
Oxygen makes up 21 percent of the air by volume.
Using the ideal gas law, PV = nRT, we can calculate the moles of oxygen gas present. Then, using the molar mass of oxygen, we can find the volume of air required to contain 12.7g of oxygen gas at 273 K and 1.00 atm.
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.
Air contains about 19-20% oxygen
As the density of Oxygen at 0º C is 1.429 kg/m³ i.e. cubic meters * density = kilograms so, 1 cubic meter of oxygen would weigh 1.429 kilograms.
About 20% of the volume of the air in the room is oxygen.