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As temperature increases, the volume of air also increases because the molecules in the air gain kinetic energy and move further apart. This relationship is described by the ideal gas law, which states that pressure and volume are directly proportional to temperature when the amount of gas and pressure are constant.
If you want the volume of a sample of air, then the litre is a fine unit to use.But it will always be the volume of the container in which you're keeping yoursample of air.
To find the volume of air containing 225 ml of oxygen, divide the desired volume of oxygen by the percentage of oxygen in air. Volume of air = 225 ml / 0.209 = 1076.56 ml.
When air temperature increases, the volume of the air also increases. This is because the air molecules gain energy and move more rapidly, causing them to spread out and take up more space.
The volume of air in a classroom would depend on the room's dimensions. To calculate the volume, you would multiply the length by the width by the height of the room. This calculation would give you the total volume of air in the empty classroom.