Pls help!! Which of the following values are the correct values for a, b c and d required to balance the
equation: а CH4 + 5O2 → CO2 + H2O
A. a=1, b = 3, c = 2, and d = 4
B. a=1, b = 3, c = 2 and d = 2
C. a = 1, I1= 2, c = 2 and d=2

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