Calculate the molarity of the solution that contains 40.4 grams of potassium nitrate in a 250.0 mL solution

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

Light waves can move through , but they travel fastest when they move through a(n) .