Who was the man who lived from 460b. c.–370b. c. and was among the first to suggest the idea of atoms?
a. atomos
c. democritus
b. dalton
d. thomson select the best answer from the choices provided a b c d

Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1

The ozone hole appears in antarctica during

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a. true or b. false