Pressure and temperature affect different gases differently giving varied conclusions to the exact volume of that gas.
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Volume, Tempature, Pressure
Temperature and volume vary directly, so if temperature decreases, so does volume. Volume decreases because the measure of the average kinetic energy of the gas particles (temperature) is decreasing also. When that happens, a gas cannot expand, and will decrease.
A gas syringe is used to measure and dispense liquids or insert and withdraw a volume of gas. These syringes vary in sizes and can collect from 500 ml to 0.25 ml of gas.
A petrol or gas pump has a volume measurement device inside it to measure the expansion of the gases that come from the petrol. As the gases expand, they can actually cause explosions.
A gas is a substance with no definite shape or volume.