Diffusion coeffiecient and calculate constant

Assignment Help Mechanical Engineering
Reference no: EM13137421

Diffusion Coeffiecient, Calculate Constant

The diffusion coeffiecient for Cr^+3 in Cr2O3 is 6x10^-15 cm2/s at 727 degrees Celcius and is 1x10^-9 cm2/s at 1400 degrees Celcius. Calculate the constant D0. Use the value of the Gas constant R+1.987 cal/mole.K

a) 0.015 cm2/s

b) 0.055 cm2/s

c) 0.25 cm2/s

Reference no: EM13137421

Questions Cloud

How long will it take until the compound is left : In a first order decomposition in which the rate constant is 0.0181 sec-1, how long will it take (in seconds) until 0.484 mol/L of the compound is left, if there was 0.548 mol/L at the start?
Problem description : he case Amarco 4.1 - linear programming modeling (p. 212 - 214) has to be looked by a expert in Operations Management or Operations Research field with excellent skills in excel sheet modeling.
Cost of your preferred stock : 15,000 shares of 5 percent preferred stock outstanding currently selling for $93 per share. What is the cost of your preferred stock?
Is sexist language appropriate in single sex group? : Sexist language has been used for years. In our modern society it has been deemed socially unacceptable. Is sexist language appropriate in single sex group?
Diffusion coeffiecient and calculate constant : Diffusion Coeffiecient, Calculate Constant, The diffusion coeffiecient for Cr^+3 in Cr2O3 is 6x10^-15 cm2/s at 727 degrees Celcius and is 1x10^-9 cm2/s at 1400 degrees Celcius.
Determine whether the company should accept special order : The company presently is selling 12,000 units annually at a selling price of $28 each. A special order has been received from a distributor who wants to purchase 3,000 units at a special price of $20 each.
Account paid-in capital in excess of par : In applying the book value method, what amount should Morgan credit to the account "paid-in capital in excess of par," as a result of this conversion?
Find the minimal length of time the body stay in world : What is the minimal length of time the body should stay in the mold if the manufacturer wants to be 85% sure that the bonds have hardened?
Mr. branson lim : GenXY Motors Pte Ltd sells second hand cars. The company has four shops in different locations either within or outside of the city area.

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Determine the heat transfer characteristics

To determine the heat transfer characteristics of a cylinder under cross flow conditions when the cylinder is isolated.

  Mechanical engineering questions

Define dynamic viscosity, Determine the centroid, Pressure due to the height of liquid, Advantage of changing the liquid, Calculate the total moment about the hinge of the seal gate.

  A bullet is fired horizontally into a wood block resting

A bullet is fired horizontally into a wood block resting on a horizontal, frictionless surface. If the mass of the bullet is 0.02 Kg and the velocity is 600 m/s

  Determine the deflection of the beam

What load P allow can be supported at the midpoint of the bar if the yield stress in the steel wires is 220 MPa and in the aluminium wire is 80 MPa? A saftey factor of n = 2 is needed.

  Construct the homogeneous solution

Construct the homogeneous solution in terms of four constant that could be determined from initial conditions and show the equations of motion

  Lower productivity than manufacturing jobs

Why do you suppose that service jobs have lower productivity than manufacturing jobs? How can a company gain a competitive advantage by having higher productivity than its compettitors have?

  Develop a dynamic model of a trebuchet

Analysis of the motion of swing including velocity and acceleration plots of all moving parts and projectile analysis of projectile eg: flight path, horizontal distance, deceleration and launch velocity

  Define the maximum take-off mass of an airbus

The maximum take-off mass of an Airbus A380 passenger jet is about 600 000 kg. The lift is provided by the wings, which have a total area of 845 m2.

  Explain a piston-cylinder device initially contains

A piston-cylinder device initially contains 50L of liquid water at 40 degrees C and 200kPa. Heat is transferred to the water at constant pressure until entire liquid is vaporized.

  The gap between them is filled with molten polymer

Two flat, rectangular plates with a lateral dimension w*l lie parallel, one above the other, a distance h apart. The gap between them is filled with molten polymer.

  Determine the minimum no of teeth required

Determine the minimum no of teeth required on pinion in order to avoid interference which is to gear with 1 a wheel to give a gear ratio of 3 to 1

  Pulley system and motor

The 50-lb load is hoisted by the pulley system and motor M. If the crate starts from rest and by constant acceleration attains a speed of 15 ft/s after rising s = 6 ft, determine the power that must be supplied to the motor at this instant.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd