The following data were obtained with Polymethylmethacrylate in toluene at 25C. Calculate the molecular weight of the polymer. c (g/100 ml) hrel 0.275 1.170 0.344 1.215 0.896 1.629 1.199 1.892 1.604 2.330 2.108 2.995

Match the following items. 1. high-intensity bundle of energy being emitted from some decaying nuclei gamma ray 2. particle radiating from the nucleus of some atoms beta particle 3. negative particle identical to an electron but radiating from a decaying nucleus alpha particle

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains