The standard heat of combustion of methane is -890.3kJ/mol. What volume of methane at stp must be burned to evaporate 10kg h2o.

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.