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Three mixtures were prepared with very narrow molar mass distribution polyisoprene samples with molar masses of 8000, 25,000, and 100,000 as indicated below.
(a) Equal numbers of molecules
(b) Equal masses of sample
(c) Equal viscosities of sample dissolved in tetra hydro furan
(K = 19.5 L g-1, a = 0.73)
For each of the samples, calculate the number-average and weight-average molar mass, and comment on the meaning of the values obtained.
y(x) = x -3/2 is a solution to 4x 2 y′′ + 12xy′ + 3y = 0 , y (4) = 1/8 , and y'(4) = -3/64 Solution : As we noticed in previous illustration the function is a solution an
4/(x+7)(x+4)
a3-a2+a-1
Case 1: Suppose we are given expressions like 3abc and 7abc and asked to compute their sum. If this is the case we should not worry much. Because adding like exp
63*789
sin 51+cos 81
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A particular algebra text has a total of 1382 pages which is broken up into two parts. the second part of book has 64 more pages than first part. How many pages are in each part of
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