None, if the Wkipedia entry is to be believed. See link http://en.wikipedia.org/wiki/Atmosphere#Composition
The mean being equal to the range has nothing to do with symmetry.
65%
The proper place to put a percent sign in a range is as follows: 40-60% The percent sign is not used after both ranges (40 and 60) when ranges are used. However, when a percentage range is not being described, such as 40 percent, it is acceptable to place the percent sign immediately following the digits (60 percent; 60%), or a space may be used between the digits and the sign (60 %).
5.9 percent to 8.6 percent
63 % in cgpa
Concentration of ozone is about 380 ppm. This is the natural range of ozone.
This part of the atmosphere is called the ionosphere. It has the largest concentration of ions because the gases in this area are ionized by Solar Radiation.
Concentration range of seawater acidity
97% of the ozone is found in the stratosphere region of the atmosphere between the range of 10km to 50 km above the sea level. It is the region where the ozone layer exists.
in pH acids range from 0-6.as the highest value is 6 and if the concentration of an acid is 6 it is concentrated as this value drops the concentration drops
No one gas comprises 99% of the atmosphere, but nitrogen (~78.09%) and oxygen (~20.95%) together comprise about 99% of the atmosphere (on a dry basis, i.e. not including water vapor which can range from near 0% to 5%).
The layer that has the greatest range is the ionosphere.
It mainly depends on the concentration and will approx. range from 10 to 12
The normal concentration of potassium in the serum is in the range of 3.5 to 5.0 mM
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acidic (lower than 7) neutral (7) and basic (higher than 7)
The mean being equal to the range has nothing to do with symmetry.