Convert 0.846 moles of KNO3 to atoms of oxygen

Matter- occupies space and possesses rest massno matter is the opposite

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.

What are the options? i can you if you give them.

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.