Given the following size frequency for a dust: Size Interval (μm) 7-17.5 17.5-21 21-25 25-28 28-30 30-33 33-36 36-41 41-49 49-70 % by Number 10 10 10 10 10 10 10 10 10 10 a. Plot the cumulative frequency distributions (in %) of the number, surface area, mass on linear graph paper assuming all particles are spheres with Pp = 1.6 g cm ³. and b. Is this a log-normally distributed dust?

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Given the following size frequency for a dust:
Size Interval (um)
7-17.5
17.5-21
21-25
25-28
28-30
30-33
33-36
36-41
41-49
49-70
% by Number
10
10
10
10
10
10
10
10
10
10
a. Plot the cumulative frequency distributions (in %) of the number, surface area,
and mass on linear graph paper assuming all particles are spheres with
Pp 1.6 g cm ³.
=
b. Is this a log-normally distributed dust?
Transcribed Image Text:Given the following size frequency for a dust: Size Interval (um) 7-17.5 17.5-21 21-25 25-28 28-30 30-33 33-36 36-41 41-49 49-70 % by Number 10 10 10 10 10 10 10 10 10 10 a. Plot the cumulative frequency distributions (in %) of the number, surface area, and mass on linear graph paper assuming all particles are spheres with Pp 1.6 g cm ³. = b. Is this a log-normally distributed dust?
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Why is the data lognormal

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How did you get the number 10, 20, 30? Are they just cumulative numbers because I'm not sure where they came from. I can provide more information for the distribution part if needed

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