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1. |
What is the copolymer composition for azeotropic copolymerization of Acrylonitrile and 1,3-butadiene at 50ᵒC, given that r1=0.02 and r2=0.30? |
A. | 0.21 |
B. | 0.417 |
C. | 0.84 |
D. | 0.62 |
Answer» C. 0.84 | |