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1. |
The transfer constant to the solvent for polymerization of of styrene in toluene at 60ᵒC is 0.125*10-5. How much dilution is required to decrease the molecular weight by 4 times when 1/Xn0 is 3.5*10-4? |
A. | 75 |
B. | 42 |
C. | 84 |
D. | 7 |
Answer» D. 7 | |