7. What is the molarity, M, of the dilution solution of KBr, given: a. Molarity of the stock solution is 0.500 M KBr
b. Volume of the stock solution is 20.00 mL
c. Volume of the dilute solution is 100.00 mL

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

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.