Calculate the solubility parameter for a methyl methacrylate-butadiene copolymer containing 25 mol % methyl methacrylate.

6-Calculate molecular weight, weight average molecular weight, and polydispersity index for the following sample of poly (hexamethylene adipamide) or Nylon 6,6. Atomic mass carbon, hydrogen, nitrogen, and oxygen are 12.011, 1.008, 14.007, and 15.999 g/mol respectively. 田 Mol% of chains DP 27% 105000 17% 75000 24% 45000 12% 65000 20% 95000

Could the separation in this experiment have been done in a different order? That is, isolation of SiO2 first, followed by separation of CaCO3 and NaCl. Explain your answer.

For each of the following statements, answer True or False and explain your answer briefly. It is preferred to apply colour tests, as a screening test, over microcrystalline tests in drug analysis.