How much energy is needed for the reaction of 1.22 moles of h3b04

Explain which atom l or m is more stable and why

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?

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17