for the following equilibrium: 2a b⇌2c if initial concentrations are [a]=0.80 m,[b]=0.95 m,[c]=2.5 m, and at equilibrium [c]=1.9 m, what is the equilibrium constant?

Magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. trial 1: trial 2: data mass of empty crucible with lid trial 1: 26.688 trial 2: 26.681 mass of mg metal, crucible, and lid trial 1: 26.994 trial: 2 26.985 mass of mgo, crucible, and lid trial 1: 27.188 trial 2: 27.180