For the following two questions, consider pure helium gas passing through a 1-meter-long plastic pipe. The...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
For the following two questions, consider pure helium gas passing through a 1-meter-long plastic pipe. The outer radius of the pipe is 1 cm, and the inner radius is 0.8 cm. The pipe has a temperature of 80°C and is surrounded by air. Chemical analysis of the air surrounding the pipe shows that in a steady state, 1-10-5 mol of helium diffuses through the pipe each second. When the pipe is replaced, a microprobe analysis shows the helium concentration at r = 0.8 cm, cHe = 0.012 mol/cm3, and at r = 1.0 cm, cHe = 0.0002 mol/cm3. Calculate the flux of He through the plastic pipe at the outer surface in units of 10-10 mol/cm2/s Calculate the diffusion coefficient of He in the plastic pipe in units of 10-8 cm2/s. For the following two questions, consider pure helium gas passing through a 1-meter-long plastic pipe. The outer radius of the pipe is 1 cm, and the inner radius is 0.8 cm. The pipe has a temperature of 80°C and is surrounded by air. Chemical analysis of the air surrounding the pipe shows that in a steady state, 1-10-5 mol of helium diffuses through the pipe each second. When the pipe is replaced, a microprobe analysis shows the helium concentration at r = 0.8 cm, cHe = 0.012 mol/cm3, and at r = 1.0 cm, cHe = 0.0002 mol/cm3. Calculate the flux of He through the plastic pipe at the outer surface in units of 10-10 mol/cm2/s Calculate the diffusion coefficient of He in the plastic pipe in units of 10-8 cm2/s.
Expert Answer:
Related Book For
Income Tax Fundamentals 2015
ISBN: 9781305177772
33rd Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven Gill
Posted Date:
Students also viewed these law questions
-
a. Wilson filed his individual tax return on the original due date, but failed to pay $700 in taxes that were due with the return. If Wilson pays the taxes exactly 2 months late, calculate the amount...
-
a. Wilson filed his individual tax return on the original due date, but failed to pay $700 in taxes that were due with the return. If Wilson pays the taxes exactly 2 months late, calculate the amount...
-
The following additional information is available for the Dr. Ivan and Irene Incisor family from Chapters 1-5. Ivan's grandfather died and left a portfolio of municipal bonds. In 2012, they pay Ivan...
-
Since perpetuity payments continue forever, how can a present value be computed? Why isnt the present value infinite?
-
A small block slides at a speed v on a horizontal surface. Knowing that h = 0.9 m, determine the required speed of the block if it is to leave the cylindrical surface BCD when = 30o. B E
-
Last year, Harold Company produced 2,000 units and sold 1,000 units. The company had no beginning inventory. Harold incurred the following costs: Direct materials per unit Direct labor per unit $30...
-
Beautiful Bottles Pty Ltd, bottle manufacturer for the food industry, has just installed a job order costing system. The company uses machine hours to apply its overhead to work in process. On 1 May...
-
When Lyle was hired, she was told that typing speed was extremely important to the position. At the time, she maintained that she could type eighty words per minute, so she was not given a typing...
-
For sgupta20: 700 words, Original Work, References Included, Plagerism free. In text citation included. Write a paper in which you examine the field of abnormal psychology. Address the following...
-
Imagine that you are an investor on January 1, 2004, and using the historical data up to that date. Assume that the Global index cannot be included in your portfolio. a. Plot the efficient frontier...
-
Tano Company issues bonds with a par value of $180,000 on January 1, 2019. The bonds' annual contract rate is 8%, and interest is paid semiannually on June 30 and December 31. The bonds mature in...
-
In the UML notation, parameterized (generic) classes are represented by (a) the normal class representation with a dotted arrow pointing at the template parameter classes (b) the normal class...
-
Aggregation (encapsulation) relationships are represented in the UML notation by (a) nesting of classes (b) lines with a solid diamond at one end (c) lines with a hollow diamond at one end (d) lines...
-
Why can the calculation of the CPI be biased? Explain what national institutes of statistics in your country can do in order to reduce the potential biases.
-
What does associations in a class diagram mean?
-
Differentiate the message syntax and semantics in sequence and collaboration diagrams.
-
A U.S.-based currency dealer has good credit and can borrow $1,000,000 or 800,000 for one year. The one-year interest rate in the U.S. is i$= 2% and in the euro zone the one-year interest rate is i =...
-
The Ranch 888 Noodle Company sells two types of dried noodles:ramen, at $6.50 per box, and chow fun, at $7.70 per box. So farthis year, the company has sold a total of 110,096 boxes ofnoodles,...
-
1. Joan, a single mother, has AGI of $85,000 in 2014. In September 2014, she pays $5,000 in qualified tuition for her dependent son who just started at Big University. What is Joans American...
-
Margaret started her own business in the current year and will report a profit for her first year. Her results of operations are as follows: Gross income............. $50,000 Travel...................
-
On September 14, 2014, Jay purchased a passenger automobile that is used 75 percent in his accounting business. The automobile has a basis for depreciation purposes of $35,000, and Jay uses the...
-
Show all the steps leading to the integral balance equation (18.6) in the text. Use the following boundary conditions and verify Eq. (18.7). (i) At \(y=0, T=T_{\mathrm{S}}\). (ii) At...
-
Consider the flat-plate heat transfer to be solved by the similarity approach. Show all the details leading to Eq. (18.15). What are the boundary conditions on \(\theta\) ? Extend your MATLAB code to...
-
For fluids with \(\operatorname{Pr} <1\) the velocity profile is assumed to be a cubic for \(y
Study smarter with the SolutionInn App