MadSci Network: Chemistry |
Air can be measured several ways. If you want to measure the mass of air in a room or a specific volume you need to define several variables. You can calculate the mass of air by the ideal gas law. PV = nRT or in terms of mass, m = PV(mw)/RT. Any General Chemistry book will have documentation on the ideal gas law. Check your local library. P = Pressure in atmospheres (atm) V = Volume of the container/room in Liters (L) n = moles of gas R = 0.0821 (liters * Atm/Moles* Kelvin) T = Temperature in Kelvin = 273.15 + (Temperature in Celsius) mw = molecular weight. For air, this value is estimated to be 29 grams/ Mole. The calculated mass would have units of grams. If this is not what you were looking for please let me know. Good Luck!
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