Briefly explain why you would or would not have obtained the same experimental results if fecl2 solution had been used instead of feso4 solution

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?

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

What is the formula of the ionic compound composed of calcium cations and chloride anions