The compositions of mixtures vary but compounds have a what composition

The compositions of mixtures vary but compounds have constant definite composition. This is because all compounds follow the Law of Definite Proportions which states that all similar compounds will always have the same proportion of elements no matter where and how they are obtained. For example, carbon dioxide will always have 1 atom of carbon and 2 atoms of oxygen.

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.

c. electrical charges of ionic bonds.

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