Which will not appear in the equilibrium constant expression for the reaction below? Upper H subscript 2 upper o (g) plus upper C (s) double-headed arrow upper H subscript 2 (g) plus upper C upper O (g). [H2O] [C] [H2] [CO]

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering