The atmosphere is a mixture of gases. it is mostly composed of oxygen and carbon dioxide nitrogen and oxygen carbon dioxide and water vapor nitrogen and carbon dioxide

i think is conclusions.i think so

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.