M
mE_snikfish♥lover
Guest
Pollutants in air and water are frequently measured in parts per million (ppm) or parts per billion (ppb). One part per million would mean that there is one gram of the pollutant on one million grams of air and water. at ordinary temperature and pressure, air has a density of 1.2x10 (exponent) -3 (exponent) or .00012 gram per cubic centimeter. What volume of air would contain one gram of sulfur dioxide, a pollutant that causes acid rain. if the sulfur dioxide concentration is 2 ppm or part per million