This problem is not part of a graded assignment. Solve this problem and show all of the work PROBLEM 2 (20 POINTS)A number of studies have been conducted on the diffusion ofsubstances such as water and oxygen in plastics withparticular relevance to the food packaging industry. It turnsout that at 30°C, the diffusivity of water in polyvinylidenechloride (PVDC) (a.k.a. Saran™) is 9.1×108 cm²/s.1Imagine you cover a glass with 100 mL (5.55 mol) of waterwith a 10 μm thick PVDC film as depicted to the right.Assuming that the water concentration on the lower surface(inside the glass) of the PVDC is 1.7 mol/m³ (based on theequilibrium vapor pressure of 4.25 kPa for water at 30°C)and "dry air" conditions (no water, a.k.a. 0% humidity) aremaintained outside the glass, determine how long (in years!!!)it will take for the water to completely evaporate from theglass assuming it can only escape the glass by diffusion through the PVDC film and that thetemperature is constant at 30°C. The diameter at the top of the glass is 10 cm.

Answered: Image /qna-images/answer/8b3257f8-e841-4ce0-9b90-8b3e9541faef.jpg

Answered: PROBLEM 2 (20 POINTS) A number of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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please solve part d and e
A student working 3.0m away from you in a chemistry lab performs an experiment which creates a bad odor. It takes a while for the smell to get to you (air currents negligible). You are able to move 2.0m further away from the source but the smell catches up with you in another 60 seconds. What is the diffusion coefficient in the air for the molecules you smell?
10:52 AM 50 SALE Noll 2.0376 K/S Downloaded by Mothusi Mahlathini (mothusimothusi194@gmail.com) SECTION A Question 1 (a) (b) (i) List and briefly explain the four components of the discipline of materials science and engineering in a linear relationship. [4] (ii) Using a flowchart, classify engineering materials, indicating the types of polymers. [5] The ionic radii and coordination number of NaCl is 0.414 -0.732 and 6 respectively. Using the data below, show that FeO has the structure of NaCl. [8] (c) Ion Ionic radius (cation/anion) (nm) Al3+ 0.053 Fe3+ 0.069 02- 0.140 CI- 0.181 F- 0.133 Fe2+ 0.077 Determine the Miller indices for the directions in the cubic unit cell shown below (Fig. Q1): [8] Figure Q1 Downloaded by Mothusi Mahlathini (mothusimothusi194@gmail.com) Question 2 (a) (b) T (i) List and briefly explain the six properties of solid materials. [6] (ii) Using a flowchart, classify metals and alloys. [6] BCC lithium has a lattice parameter of 3.5089 x 10-10 m and contains 200…
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Only questions 4,5,6 I need help with
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Answer whats in the image, please and thank you
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