Chemistry, 16.10.2019 22:00, Graciesett4072
Howard describes a model system used to test the molecular weight distribution of acondensation polymer (g. j. howard, j. polym. sci. 37, 310 (1959)): "the polymer sample was an acetic acid-stabilized equilibrium nylon-6,6. analysis showed it to have the following end group composition (in equivalents per 106 g): acetyl = 28.9, amine = 35.3 and carboxyl = 96.5. the number average degree of polymerization is, therefore, 110 and the conversion degree (= extent of reaction) = 0.9909.for nylon-6,6, 99% of the carboxylic acid groups are know to have reacted.
calculate the average of mn, mw and mz.
Answers: 3
Chemistry, 21.06.2019 18:20, datboyjulio21
Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0
Answers: 2
Chemistry, 22.06.2019 07:30, 10040813
The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.
Answers: 3
Chemistry, 22.06.2019 09:40, gonzaleze18
In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need
Answers: 2
Howard describes a model system used to test the molecular weight distribution of acondensation poly...
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