arrestees test positive for drug use. at the time of their apprehension.1. Self-reports from prison inmates. indicate that their drug use prior. to incarceration is typically chronic. and linked to other criminal behav-. ior.
A megagram is the same thing as a metric tonne. There  are a million grams in a megagram. There are a million micrograms  in a gram. Therefore, there are 1,000,000 x 1,000,0 â¦ 00 micrograms in  a negagram, which means 1,000,000,000,000 or a trillion.
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.