How many atoms are present in 34.96 moles of mg

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.

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

When a scientific theory has been tested and proved by the scientific community, it becomes a law