What did robert millikan's oil drop experiment prove?
a. atoms are composed of positive charges.
b. it determined the actual mass of the electron.
c. matter can be conserved.
d. atoms can be neither created nor destroyed.

Draw the lewis dot structure for each of the following polyatomic ions

Why is it possible for different microorganisms to extract energy not only from carbohydrates and other biological molecules but from a large variety of substances?

Two examples of energy transformations are shown. the energy transformations are similar because they both involve transformations that begin with chemical energy. begin with electrical energy. result in radiant energy. result in mechanical energy.