Eyedrops for dry eyes usually contain a water-soluble polymer called poly(vinyl alcohol), which
is based on the unstable organic molecule vinyl alcohol:
Predict the approximate values for the H -- O -- C and O -- C -- C bond angles in vinyl alcohol.
Predict the H -- C -- H and C -- C -- C bond angles in propyne:
Chapters Seven, Eight, and Nine: Sweat—by-product of metabolism of heat, carries excess heat out of the body *When it evaporates, it takes that excess heat with it, cooling you. Heat Cramps—intense muscle cramps often occurring in calves, arms, and back *Stop activity, rest, cool down, drink plenty of fluids. Heat Exhaustion—occurs when the body gets too hot *Clammy, moist skin; profuse sweating; feeling tired and weak Heatstroke—prolonged exposure to heat and temperature rises (104 degrees Fahrenheit) where the body cannot cool itself *Rapid or strong pulse, hot red dry skin, may lose consciousness Frostbite—caused by limited oxygen to the tissue *Exposed to cold conditions; affects toes, feet, fingers, hands, nose, and ears