Mercury orbits the sun at more than ten times the sun speed of Neptune

Yes, this is true.

Explanation: It only takes 88 days for Mercury to orbit around the sun. No other planet travels around the sun faster.

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;

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.