An equilibrium mixture of O2, SO2 and SO3 contains equal concentrations of SO2 and SO3.
Calculate the concentration of O2 if Kc = 270 for the reaction: 2 SO2(g) + O2(g) - 2 SO3(0)

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.