4. Bond length between two bonded atoms is a. twice the diameter of the molecular orbital.
b. the separation at which their potential energy is minimum.
c. the separation at which the motion of each atom stops.
d. the sum of the diameters of each of the two overlapping electron
clouds.

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.

catya that's not even a b or c

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.