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An iron bar of mass 969 g cools from 94.0°C to 5.0°C. Calculate the metal's heat change (in kilojoules).

The correct answer should be "electrons orbit the nucleus in circular motions exactly as shown on the classic bohr model."

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 net force is 100

Reducing agents  oxidized by the reaction