Consider an ionic compound, mxmx , composed of generic metal mm and generic, gaseous halogen xx . the enthalpy of formation of mxmx is δh∘f=−421δhf∘=−421 kj/mol. the enthalpy of sublimation of mm is δhsub=155δhsub=155 kj/mol. the ionization energy of mm is ie=401ie=401 kj/mol. the electron affinity of xx is δhea=−321δhea=−321 kj/mol. (refer to the hint). the bond energy of x2x2 is be=239be=239 kj/mol. determine the lattice energy of mxmx .

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

C. it comes from the core of the earth.

Answerok the answer is (all)