239 W Main St, Richmond, KY 40475 1 859 623 1000 info@richmond.ky.us Justice, Education, Industry. The City of Richmond was founded in 1798 by Colonel John Miller, a Revolutionary War soldier. According to tradition, Miller was attracted to the area by the good spring water and friendly Native Americans.
A microgram is a metric unit of mass that is equal to one thousandth of a milligram (mg). In other words, a microgram is one thousand times smaller than a milligram. Micrograms are a million times smaller than grams (g); one gram is equal to one million micrograms. A microgram is one of the smallest units of mass that is used. Many medications are prescribed using micrograms as their unit of measurement.
Since one ppm means 1 microgram per gram, the number of micrograms present will be the same as the number of grams of solvent. Thus, if a substance is dissolved in one cubic meter of sulfuric acid at a concentration of one ppm, there are 1.85 million micrograms present. microgram is one-millionth of a gram. Thus, a concentration of one ppm means there is one microgram of a substance per gram of solvent. Find the mass of the solvent contained in one cubic meter. To do this, look up the specific gravity of the solvent.