Molality Worksheet

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 parts per hundred. 25 grams of a chemical is dissolved in 75 grams of water. ................
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