For Sample #1: Enter the initial concentration of Fe3+ M Incorrect. Tries 4/99 Previous Tries Calculate the equilibrium concentration of Fe3+. M Incorrect. Tries 3/99 Previous Tries Enter the initial concentration of HSCN. M Incorrect. Tries 1/99 Previous Tries Calculate the equilibrium concentration of HSCN. M

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.

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.