In the problem: "What volume of 1.25M HCl would be required to prepare 180 mL of a 0.50M HCl solution?" what is the initial concentration (M1)

They can measure  the amount of energy gained or lost

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.