experimental chain dimensions for poly(ethylene terephthalate) (pet) at 275°c are given by o/m 0.90 å2mol/g. calculate c[infinity](6 points), the statistical segment length (6 points), and the persistence length for this polymer (6 points). based on these numbers, is pet a flexible polymer, or not (1 points)? explain your answer.

Assume that the variables x and y are inversely related. if k = 18, what is the value of y for each of the following points? be sure and record your data to be used in the following problem.

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.