. Consider the following reaction : 4NH3+502 → 4NO + 6H20,suppose we start the reaction with 100 molecule of NH3 and 100 molecule of
O2, what will be the total number of molecule (reactant and product)
after this reaction goes to completion?

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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.