Calculate the degree of polymerization for(a) a low-density polyethylene with a molecular weight of 20,000 amu. (b) a high»density polyethylene with a molecularweight of 300,000 amu. and (c) an ultrahigh molecular weight polyethylene with a molecular weight of 4,000.000 amu.

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

Which are forms of frozen water? check all that apply. dew frost hail rain sleet

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?