Ascientific is a principle that describes the behavior of a natural phenomenon. a)law b)model c)theory d)analysis

The answer is B. Scientific models are used by scientists in situations where an experiment cannot be viably conducted. Commonly accepted data, ideas, and knowledge within the scientific community are used to create scientific models that endeavor to explain particular phenomenons.

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.

the answer is symmetrical : )