Identify the most common reaction conditions for the dehydration of 2,3-dimethyl-2-pentanol. Select all that apply. A. The presence of a platinum catalyst. B. The presence of excess H2O. C. The presence of acetone. D. The presence of a base catalyst. E. The presence of an acid catalyst. F. The presence of heat.

What? i don’t understand

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.