$(10pts)$ A polyethylene sample was cooled from $160C,$ where is a liquid to a temperature of $126C.$ The following table gives the density of poly$($ethylene$)$ as a function of time at the temperature of $126C.$ Note that the clock was started when the polymer reached the temperature of $126C.$ Why is the density changing as a function of time? What information can you extract

from this data? Analyze this data with the appropriate theory. Is the theory applicable to the whole time scale or only to a part of it$?$

$\backslash$table$[[t(min),d(\frac{g}{c}m3),t(min),d(\frac{g}{c}m3),t(min),d(\frac{g}{c}m3),t(min),d(\frac{g}{c}m3)$