3. A scientist used a filter weighing 4.020 grams to collect particles. After pumping 750 mL of air
through the filter, it weighed 4.031 grams. What was the concentration of particle mass in the
processed air, in milligrams per liter (mg/L)?
3. A scientist used a filter weighing 4.020 grams to collect particles. After pumping 750 mL of air
through the filter, it weighed 4.031 grams. What was the concentration of particle mass in the
processed air, in milligrams per liter (mg/L)?