Help me does anyone know the differences and similarities between the electron model by erwin schrodinger and the planetary model by niels bohr ??

elements make up everything, and they combine to make compounds.

the answer is c

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.