For a reaction where H=+573 kJ/mol and S=+1.64kJ/mol. K, at what temperature, in K, does X(I)X(g) occur spontaneously? What will the sign on S be for the following reaction and why? 2Mg(s)+O2(g)2MgO(s) A) Positive, because there is a solid as a product. B) Positive, because there are more moles of reactant than product. C) Positive, because it is a synthesis reaction. D) Negative, because there are more moles of gas on the reactant side than the product side. E) Negative, because there are more moles of reactant than product