Why are soils distributed unevenly around the world?

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

What is the work done by the electric force to move a 1 c charge from a to b?

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