Atomic Mass of Metallo

mass fraction = mass of component / total mass of soln. mass % = mass fraction x 100. parts per million/billion/trillion (ppm/ppb/ppt) ppm = (mass fraction) x 106. ppb = (mass fraction) x 109. ppt = (mass fraction) x 1012. Used for very dilute solutions (for example pollutants in drinking water). Notice that mass percent could also be called ... ................
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