2. Pentane has the chemical formula C5H12. Pentane is a liquid at room temperature and when mixed with water, it forms a separate layer on top of the water. 1-Pentanol has the chemical formula C5H12O. 1-Pentanol is also a liquid at room temperature, but when mixed with water, it does not form a separate layer. How can the differences in behavior toward water by these two liquids be explained?

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases