If 15.0 g iron and 1.00 mol oxygen are allowed to react, what will be the limiting reactant? How many grams of rust will be produced? 4 Fe + 302 --> 2Fe203

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?