Which of the following is not an example of a biological polymer

a) blood serum's
b) saliva's amylase
c) table sugar (sucrose)
d) glycerol

Which term best describes the form sound takes as it travels away from a drum (a- gas)(b-music) ( c-waves) (d-particles

Drug abuse will not lead to physical and psychological dependence. true or false ?

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m