9. Consider the following spontaneous gas phase reaction of A molecules (open circles) and B2 molecules (filled circles): (a) Write a balanced equation for the reaction. Make sure you include states of reactants and products. (b) What are the signs (+,-, or 0) of AH, AS, and AG for the reaction? (One of these you should KNOW from given info, one you should easily be able to predict, and the third you predict based on the other two.) Explain your answers