Under what conditions can potassium bromide conduct electricity? A. only when melted or dissolved in water

B. only when dissolved

C. only when it is in crystal form

D. only when melted

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.