Question
In: Chemistry
Q. A polydisperse sample of PS is prepared by mixing three monodisperse samples in the following...
Q. A polydisperse sample of PS is prepared by mixing three monodisperse samples in the following proportions:
A : 1 g, 10,000 molecular weight PS
B : 2 g, 50,000 molecular weight PS
C : 2 g, 100,000 molecular weight PS
Using this information, calculate the number-average MW, weight-average MW and PDI of the mixture.
Solutions
queen_honey_blossom answered 10 months agoRelated Solutions
3. Two samples are prepared by mixing monodisperse versions of three polyX’s with molecular weight =...
3. Two samples are prepared by mixing monodisperse versions of
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a) Equal number of moles (or molecules) of the three
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b) Equal weights of the three monodisperse polyX’s
Assume the following three samples of data: Sample A: 4, 5, 6, 7, 8 Sample B:...
Assume the following three samples of data:
Sample A: 4, 5, 6, 7, 8
Sample B: 3, 5, 6, 7, 9
Sample C: 2, 5, 6, 7, 10
Which of the above samples (A, B, or C) will have the smallest
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Sample A
Sample B
Sample C
The variance of the three samples will be the same
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Calculate the pH of the buffers prepared in the following
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A. By mixing 50.00 mL of 0.200 M ammonium nitrate, NH4NO3, with
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C. By mixing 60.00 mL of 0.400 M sodium formate (NaCHOO) with
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D. By mixing 80.00 mL of 1.00 M NH3 with 40.00 mL of 1.00 M...
A movie theater faces the following demand curves: Seniors: Ps = 27-Q Adults: Pa = 33...
A movie theater faces the following demand curves: Seniors: Ps =
27-Q Adults: Pa = 33 - Q The theater has a fixed cost of 50, and a
constant marginal cost of 1 per ticket. a) If the movie theater
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seniors. b) How much profit does the movie theater earn from
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Consider the following means and sample sizes for two
independent samples (with the samples being denoted by the
subscripts "X" and "Y"):
MX = 6.286, MY= 1.973,
nX= 16, nY= 16. If the
standard error (sDifference) is 2.256, what is
the the upper boundary of the corresponding 95% confidence
interval? Please use a typical null hypothesis that predicts no
differences between the two populations when computing your answer.
When calculating your answer, please ensure that you subtract the
mean for...
what is the concentration of each substance if a solution is prepared by mixing 5.00g of...
what is the concentration of each substance if a solution is
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Please show work
What is the pH of a buffer that is prepared by mixing 30.0 mL of 1.0...
What is the pH of a buffer that is prepared by mixing 30.0 mL of
1.0 M HF and 20.0 mL of 2.0 M KF? (Ka for HF 7.2 x
10−4)
What is the pH of a solution that contains 0.40 M CH3COOH and
0.30 M CH3COONa at 25°C (Ka=1.8 x 10−5)?
What is the pH of a buffer that is prepared by mixing 30.0 mL of 1.0...
What is the pH of a buffer that is prepared by mixing 30.0 mL of
1.0 M HF and 20.0 mL of 2.0 M KF? (K a a for HF 7.2 x 10 −4 )
a) What is the pH of a buffer solution prepared by mixing 120 mL of a...
a) What is the pH of a buffer solution prepared by mixing 120 mL
of a 0.435 M CH3CO2H with 50 mL of a .286 M
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CH3CO2H Ka = 1.75 x
10-5
b) What is the resulting pH if we add 10.2 mL of a .513 M HCl
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c) What is the resulting pH if we add 3.56 mL of a 0.420 M NaOH
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The solvent for an organic reaction is prepared by mixing 50.0 of acetone () with 61.0...
The solvent for an organic reaction is prepared by mixing 50.0
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