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Homework help.. I don't understand how to solve this problem please show steps and box answer...

Homework help.. I don't understand how to solve this problem please show steps and box answer please.. thank you for your help!!

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If a nylon 6.6, having a number-average molar mass M_n = 3.395 kg mol^-1, was produced by RA₂ + RB₂ step polymerization with H₂O being the by-product, determine the percent conversion if 1.1 mole of RA₂ and 1 mole of RB₂ were used in the process.

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