1. Each of the pairs of images below contains substances composed of two elements: X (red balls) and Y (blue balls). Write a balanced chemical equation describing the reaction taking place in each pair of images. Be sure to indicate the physical states of the reactants and products using the appropriate symbols in parentheses.

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a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.