Solution Found!

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli
Change Question

(II) Oxygen diffuses from the surface of insects to the

Chapter 14, Problem 72P

(choose chapter or problem)

Get Unlimited Answers
QUESTION:

Problem 72P

(II) Oxygen diffuses from the surface of insects to the interior through tiny tubes called tracheae. An average trachea is about 2 mm long and has cross-sectional area of 2X 10-9 m2 Assuming the concentration of oxygen inside is half what it is outside in the atmosphere, (a) show that the concentration of oxygen in the air (assume 21% is oxygen) at 20°C is about 8.7 mol/m3 then (b) calculate the diffusion rate J, and (c) estimate the average time for a molecule to diffuse in. Assume the diffusion constant is 1X 10-5 m2/s.

Questions & Answers

QUESTION:

Problem 72P

(II) Oxygen diffuses from the surface of insects to the interior through tiny tubes called tracheae. An average trachea is about 2 mm long and has cross-sectional area of 2X 10-9 m2 Assuming the concentration of oxygen inside is half what it is outside in the atmosphere, (a) show that the concentration of oxygen in the air (assume 21% is oxygen) at 20°C is about 8.7 mol/m3 then (b) calculate the diffusion rate J, and (c) estimate the average time for a molecule to diffuse in. Assume the diffusion constant is 1X 10-5 m2/s.

ANSWER:

Step-by-step solution

Step 1 of 3

Add to cart

Study Tools You Might Need

Chapter: 8 Problem: 48P

Introductory Chemistry 5
For the reaction shown, find the limiting reactant for each of the initial quantities of reactants. \(4 \mathrm{Cr}(s)+3 \mathrm{O}_{2}(g) \longrightarrow 2 \mathrm{Cr}_{2} \mathrm{O}_{3}(s)\) (a) \(1 \mathrm{~mol} \mathrm{Cr} ; 1 \mathrm{~mol} \mathrm{O}_{2}\) (b

Chapter: 6 Problem: 6E

Mathematical Statistics with Applications 7
The joint distribution of amount of pollutant emitted from a smokestack without a cleaning device \(\left(Y_{1}\right)\) and a similar smokestack with a cleaning device \(\left(Y_{2}\right)\) was given in Exercise 5.10 to be \(f\left(y_{1}, y_{2}\right)=\left\{\begin{array}{ll} 1, & 0 \leq y_{1} \l

Chapter: 5 Problem: 1

Statistics Through Applications 2
An online poll In June 2008, Parade magazine posed the following question: Should drivers be banned from using all cell phones? Readers were encouraged to vote online at parade.com. Th e July 13, 2008, issue of Parade reported the results: 2407 (85%) said Yes and 410 (15%) said No. (a) What type of s

Chapter: 0 Problem: 7.2

Biology 8
Aquaporins exclude passage of hydronium ions (H30+). But recent research has revealed a role for some aquaporins in fat metabolism, in which they allow passage of glycerol, a three-carbon alcohol (see Figure 5.11), as well as H20. Since H30+ is much closer in size to water than is glycerol, what do y

Chapter: 41 Problem: 6

Physics for Scientists and Engineers with Modern Physics 9
Two square wells have the same length. Well 1 has walls of finite height, and well 2 has walls of infinite height. Both wells contain identical quantum particles, one in each well. (i) Is the wavelength of the ground-state wave function (a) greater for well 1, (b) greater for well 2, or (c) equal for

Chapter: 32 Problem: 1

Campbell Biology 10
Among the characteristics unique to animals is a. gastrulation. b. multicellularity c. sexual reproduction. d. flagellated sperm.

Chapter: 46 Problem: 14

Biology 2e by Openstax
Organisms that can make their own food using inorganic molecules are called: a. autotrophs b. heterotrophs c. photoautotrophs d. chemoautotrophs

Chapter: 10 Problem: 10

Intermediate Accounting 16
How does unearned revenue arise? Why can it be classified properly as a current liability? Give several examples of business activities that result in unearned revenues.

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back