suppose you start with a 1.66 g sample of aspirin. after recrystallizing the sample, you have 1.27 g of aspirin. what is the percent recovery of aspirin in this recrystallization experiment?

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it