A piece of iron at 75.0oC is dropped into 50.0 g of water at 20.0oC. The final temperature of the water is 28.3oC. The specific heat of iron is 0.450 j/goC. Determine the mass of the piece of iron.

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 state or quality of being humid.a quantity representing the amount of water vapor in the atmosphere or a gas.