Question

A 0.928 g cereal sample was digested in acid and diluted to a final volume of 20.0 mL. It was then subjected to a further 10-fold dilution. When that solution was evaluated using ICP-MS, a particular element was present at 258.9 ppb (wg/L). How many milligrams of the element were present in the cereal sample? Enter the numerical value as a number ( 0.0315 mg as 0.0315). Note: The question is asking for milligrams in the sample not milligrams element per gram of cereal

Answer 1

4iven neal sample 0-928 A final volume - 20 m| jain subjeded 40fold dilution RODX10 .volume 20X10 2o ml- lemen at 58.9 ppb (/) particular ia mthe element prsent caral sample 0L 258.9 x0-2 xL 1 10-3 SI X103 0-0517