What is the chemical formula for aluminum fluoride

Type the letter that represents the correct location for each particle type below.

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

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?