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.

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.