An automobile engine generates 2230 Joules of heat that must be carried away by the cooling system. The internal energy changes by -2873 Joules in this process. Calculate w for the engine. This represents the work available to push the pistons in this process.

Hno3(aq) → h+(aq) + no3−(aq). picture ii best represents the strong acid hno3. strong acids are strong electrolytes

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.