AP EAMCET201923 Apr 2019Morning ShiftChemistryPolymersActual
Number average molecular mass of a polymer that contains 15 molecules with each of mass, 8,000 and 15 molecules with each of mass 80,000 is
Options
- A22,000
- B33,000
- C11,000
- D44,000
Correct answer
D. 44,000
Step-by-step solution
Number average molecular mass of polymer is given by formula: ( aligned M_n & = N_i M_i N_i & = 15 8000+15 80,000 30 & = 120000+1200000 30 & = 1320000 30 =44,000 aligned )