10g of non volatile substance is dissolved in 100g water. Depression in freezing point is 1.2°C. Find out molar mass of substance. (K = 1.86 Km !)​

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.

It would be true sodium reacts with water in a violent way 

Elements would be the right answer

Answerheavy water or deuterium oxide.