The compound k2o2 also exists. A chemist can determine the mass of k in a sample of known mass that consists of either pure k2o or pure k2o2 . From this information

They are all full and don't need any more electrons in there outer shell.

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.

The answer is 4 i don't know if its right let me see.