Volume is a measure of the amount of space and object takes up. Density is the ratio of mass to volume and thus does not depend on the amount of a substance. Describe how you find the density of a substance.

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.