Endeleev saw trends in the physical and chemical properties of elements when he organized them by

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned

Define dew point. i am writing this part to be able to ask the question

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?