Relatiewe digtheid: Verskil tussen weergawes
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Volgens die [[ideale gaswet]] is die digtheid van lug by [[standaard
: <math>\rho_{lug} = \frac{PM}{RT} = \frac{101.325 \times 28.961}{8.314 \times 273.15} = 1.292 \ kg/m^3</math>
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