Bromoacetic acid, BrCH2CO2H, is a monoprotic(one proton)acid for which a 0.100 M solution is 13.2 % dissociated at equilibrium. Calculate Kafor this acid

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?