Compound a and compound b are constitutional isomers with molecular formula c3h7cl. when compound a is treated with sodium methoxide, a substitution reaction predominates. when compound b is treated with sodium methoxide, an elimination rection predominates. propose structures a and b.

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)

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.

The velocity would be 2 

The answer to your q the total mass is 73