(Please help me and thanks for your helpfulness) An unknown substance with a mass of 100 grams absorbs 1000J while undergoing a temperature increase of 15°C. What is the specific heat of the substance?

b) nuclear ive learned that in a pedtrodic table

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.