A gas has a volume of 480 ml at 900 mmHg pressure. What pressure is needed to change the volume of the gas to 320 ml

The formula is (nh4)2co3

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.