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For crosslinking of preformed chains, what critical fraction of monomers need to participate in crosslinks to reach the gel point, pc?   

27. Why was the Sabbatai Tzvi movement particularly devastating in Jewish history?

20. How did the education of Jewish women historically differ from that of men, according to Wein?

16. How does Rabbi Berel Wein explain the recurring Jewish involvement in commerce, finance, and small trades across history?

13. According to Rabbi Berel Wein, what was one of the enduring challenges in the relationship between rabbis and the lay community?

19. What central role does Rabbi Berel Wein ascribe to women in ensuring Jewish survival throughout history?

21. What major shift occurred in women’s roles in Jewish life in the modern era, as described by Wein?

10. According to Rabbi Berel Wein, how has anti-Semitism paradoxically shaped Jewish continuity?

17. What tension does Wein highlight regarding wealth within Jewish communities?

25. What recurring danger does Rabbi Berel Wein associate with Jewish messianic movements?