If an aqueous solution has a ph of 5.57 what is the concentration of hydroxide ion ([oh-]) in the solution?

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

Can someone me with questions 12 and 13 plz.