The rate constant for a certain reaction is k = 6.20×10−3 s−1 . If the initial reactant concentration was 0.200 M, what will the concentration be after 20.0 minutes?

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.

Your awser would be a acetone