Which element is reduced in the following reaction: 2Mg + O2 → 2MgO if Mg goes from 0 to +2 and O goes from 0 to −2?

Mg
Neither element
O
Mg and O

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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.