What did rutherford discover that thomson did not understand?

a) that an atom's electrons took up as much space as its nucleus

b)that atoms were too small to affect alpha particles

c) that electrons were much smaller than alpha particles

d) hat most of an atom's mass was packed in a central nucleus

The equation below shows the reaction of zinc with hydrochloric acid (hcl). zn (s) + 2 hcl (aq) —> zncl2 (aq) + h2 (g) what will happen if the concentration of hcl is decreased? a. more zncl2 will be produced. b. the reaction rate will slow down. c. the hydrochloric acid will become more acidic. d. the reaction will produce water instead of hydrogen gas.