Think, Solve, and Learn למדת 0 מתוך 60

שים לב! - לא תוכל לראות התקדמות למידה ללא התחברות (תמיד תשאר על 0%)
לחץ פה להתחברות מהירה

shuffle help brightness_4 brightness_7 format_textdirection_r_to_l format_textdirection_l_to_r

1) In free radical chain reaction polymerization of vinyl monomers, the rapid growth to high polymer molecular weight (MW) even at a low level of the total concentration of monomers polymerized, is due to which of the following? (Choose from the following four possibilities)

(20 נק') - שאלה #36978

Which of the following statements is true about monomer orientation as it adds to the propagating chain in the radical polymerization of mono-substituted vinyl compounds (H2C=CHR where R is a group or atom such as benzene, nitrile, chloride)? (Choose from the following four possibilities)

(20 נק') - שאלה #36979

Which of the following differences between polymers with chemical covalent crosslinks as compared to ionic and non-covalent crosslinks, is not correct? (Choose from the following four possibilities)

(20 נק') - שאלה #36980

If a condensation polymerization is carried out with a mixture of a tetra functional carboxylic acid and a difunctional carboxylic acid and a difunctional alcohol monomers where the alcohol and carboxylic acid groups are in equivalent molar amounts what will be the approximate reaction conversion, p, of monomers into polymer at the gelation point? (Choose from the following four possibilities)

(20 נק') - שאלה #36981

Which of the following can best be made by stepwise condensation or stepwise addition polymerization? (Choose from the following four possibilities)

(20 נק') - שאלה #36982
 

QuizMe 2024 © כל הזכויות שמורות. כן, כולן.

מתארחים בגאווה בשרתי Pixis