KOH + Co3(PO4)2 → K3PO4 + Co(OH)2 Balance and classify it (how do I know how to classify it)

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.

Which three statements represent the benefits of performing experiments using computer simulations?

Which one of the following substances would be the most soluble in ccl4? na2so4 h2o ch3ch2ch2ch2oh c4h10 hi