Conc Problems

3. A bottle of hydrogen peroxide is labeled 3%. If you pour out 50mL of hydrogen peroxide solution,what volume is actually hydrogen peroxide?4. What is the percent by mass of iced tea containing 0.75g of aspartame (artificial sweetener) in 250 gwater?Parts per million1. The EPA considers water unfit for human consumption if it contains lead at a concentration of 0.05ppm or higher. A 2300 g sample of water is analyzed and found to contain 0.0785 mg of lead. Whatis the composition in parts per million? Would this be considered safe to drink?2. A water sample found to contain a lead level of 2.80 ppm. How much lead would there be in 855 g ofthe sample?3. A solution that contains 10 ppm of capsaicin (the compound responsible for hotness in peppers) willproduce a persistent burning in your mouth. How many grams of capsaicin are present in a 25g hotpepper?Number answers and units in random order:18.7 0.0024 0.00025 0.45 0.034 0.3 0.04 1.5 1.5 5.5 51.8 3.5 0.69 0.6 120 0.136 10ppm ppm g g g g g M M M M mol mol mL % % %