Write the symbol for every chemical element that has atomic number greater than 70 and atomic mass less than 183.0 u

50.23 i believe is correct but don't quote me on that.

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.