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Which gas present in air takes part in a combustion reaction?
Oxygen gas is the gas present in air that takes part in a combustion reaction. It acts as the oxidizing agent in the reaction.
How many oxygen atoms are present in 5.2g of 02?
Well, honey, if you're talking about 5.2g of O2, then we need to remember that oxygen comes in pairs in O2 molecules. So, one mole of O2 weighs 32g and contains 6.022 x 10^23 molecules, which means 5.2g of O2 would contain about 1 x 10^23 oxygen atoms. Hope that clears the air for you!
Which two elements present in air?
The two main elements present in air are nitrogen, which makes up about 78% of the air, and oxygen, which makes up about 21%. Other trace elements such as argon, carbon dioxide, and water vapor are also present in smaller amounts.
Is water present in air?
Aside from bubbles, there is no "air" in water, however oxygen and other atmospheric gases, such as oxygen or nitrogen, may readily absorb into water. Water is after all made up of two atmospheric gases, hydrogen and oxygen.
Does air conditioning lower oxygen levels?
Air conditionning has no chemical reactions that would lower oxygen levels. It does however reduce the humidity in the conditionned air. This would remove moles of water from the air and increase the perecntage, but not the mass, of the oxygen in an air sample.
When propane undergoes complete combustion in air for each mole of propane burnt how many moles of oxygen are consumed and how many moles of water are formed?
The answer is: 5 moles oxygen and 4 moles H2O.The reaction is:C3H8 + 5 O2 = 3 CO2 + 4 H2O
How many milliliters of nitrogen and oxygen are present in one liter of dry air?
20.95%oxygen and 78.08% nitrogen
How many levels in oxygen?
oxygen is present everywhere in air,water etc. the type is o2 is gas o is nascent oxygen rest oxygen forms many compounds
What volume of air contains 12.7g of oxygen gas at 273 K and 1.00 ATM?
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.
How do you calculate the ammount of air to burn a given fuel?
First work out the balanced Chemical equation for the combustion of the fuel concerned. That will give you the amount of Oxygen needed. Convert the amount of fuel to be burned into to molar quantities and this will in tun tell you haw many moles of Oxygen will be needed. You then need to determine how much air (say by volume) contains that number of moles of Oxygen, given that air is only 21% oxygen.
What percentage of the air around us is oxygen?
The percentage of oxygen in the atmosphere is 20.75%. The atmosphere has many other elements that we breathe in besides oxygen. Oxygen needs to be present for life on earth.
When you breather in you inhale many gases present in the air including oxygen?
Yes, all gases from the atmosphere are inhaled but oxygen is indispensable for the life.
Which gas present in air takes part in a combustion reaction?
Oxygen gas is the gas present in air that takes part in a combustion reaction. It acts as the oxidizing agent in the reaction.
What is the mole fraction of oxygen gas in air?
The mole fraction of oxygen gas in air is approximately 0.21. This means that out of every 1 mole of air, 0.21 moles are oxygen gas molecules.
What gas present in the air can react with metals?
Oxygen
Where is oxygen present?
Oxygen is present in the Earth's atmosphere, making up about 21% of the air we breathe. It is also present in water bodies, where it dissolves to support aquatic life. Additionally, oxygen is found in the Earth's crust and is a component of many minerals and compounds.
How much oxygen is present in 5 L of air?
In a 5 L volume of air, approximately 20% of it is oxygen. Therefore, 1 L of air would contain about 0.2 L (or 20%) of oxygen. Therefore, in 5 L of air, there would be approximately 1 L of oxygen present.
