How many grams of Iron (II) iodide are produced when 20 mols of iron (III)
reacts with iodine?

Particle exchange energy though elastic collision , hope this .

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.

Answer trigonal pyramidal;