A student needs to prepare an aqueous solution of sucrose at a temperature of20o C with a vapor pressure of 15.0 mm Hg. How many grams of sucrose (mm =342 g/mol) does she need if she uses 375 g H2O? (The vapor pressure of waterat 20o C is 17.5 mm Hg.)

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.

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The answer is c - the principal of original lateral continuity.