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Which unit is used to express the concentration of substances in air as parts per million by volume?
Which unit is used to express the concentration of substances in air as parts per million by volume?
What is the equivalent value of 1 ppmv (parts per million by volume) in terms of volume of gaseous pollutant to volumes of air?
What is the equivalent value of 1 ppmv (parts per million by volume) in terms of volume of gaseous pollutant to volumes of air?
What is the concentration unit for atmospheric pollutants expressed as 1 in 10^9 volumes of air?
What is the concentration unit for atmospheric pollutants expressed as 1 in 10^9 volumes of air?
What is the molar mass of a gaseous pollutant if 1 ppm is equivalent to 40.9 M μg/m3?
What is the molar mass of a gaseous pollutant if 1 ppm is equivalent to 40.9 M μg/m3?
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What is the conversion factor between parts per million (ppm) and parts per billion (ppb)?
What is the conversion factor between parts per million (ppm) and parts per billion (ppb)?
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