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What is Atmospheric Pressure and Density Insights about?

Atmospheric pressure is caused by the weight of air above and decreases with elevation. Standard pressure at sea level is 101.3 kPa. Torricelli demonstrated atmospheric pressure in 1643 using a mercury barometer. Air density varies with pressure, temperature, and humidity based on the ideal gas law. At standard conditions, air density is 1.225 kg/m3. Mixing ratio measures the abundance of one gas relative to others, such as nitrogen at 78% and oxygen at 21% of air molecules. Trace gases have low concentra

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Anonymous Su5mGPPM

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EN