Consider the following reaction (X = Cl or Br) which statement s is are correct? CH3CH2CH3 + X2CH3CHCH3--X + CH3CH2CH2--X
i. statistically the 1 halopropane should be the major isomer
ii. the 2 halopropane to 1 halopropane ratio is largest when X = Br
iii. the 2 halopropane to 1 halopropane ratio is largest when X = Cl
A. only Il
B. only Ill
C. I and II
D. I and III

Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. despite its name, silica gel is a solid. it is a chemically inert, highly porous, amorphous form of sio2. because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.

Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2