CBEMS 125C Mass Transfer
Homework 1 Due 04/09/2015 at the beginning of lecture
1.
Find the solution to the following differential equations, and in each case plot y as a
function of x over the domain of interest specified. Note: hand-drawn plots will not

CBEMS 125C Mass Transfer, Spring 2015, Homework 8
Due at the beginning of lecture on 06/04/2015
1. An absorption column with a diameter of 1 m is to be used to remove ammonia from an air stream.
The ammonia mole fraction in the air stream is 0.05, which m

CBEMS 125C Mass Transfer, Spring 2015, Homework 7
Due at the beginning of lecture on 05/28/2015
1. Problem 30.5 in the textbook (30.13 in the 5th edition).
2. Problem 30.6 in the textbook.
3. Problem 30.9 in the textbook (30.8 in the 5th edition; however,

CBEMS 125C Mass Transfer, Spring 2015, Homework 2
Due at the beginning of lecture on 04/16/2015
Note: All textbook problems refer to the 6th edition.
1. Problem 24.1 in the textbook.
2. Problem 24.4 in the textbook.
3. Starting from one of the expressions

CBEMS 125C Mass Transfer, Spring 2015, Homework 5
Due 05/08/2015 by 5 pm in ET 916
1. A long solid slab of thickness L, having a uniform initial concentration CA0 of species A is suddenly
exposed on one side (on the x = L side) to a low-resistance ambient

CBEMS 125C Mass Transfer, Spring 2015, Homework 3
Due at the beginning of lecture on 04/23/2015
Note: All textbook problems refer to the 6th edition. Wherever possible, the corresponding
number for the 5th edition is also given.
1. Problem 25.4 in the tex

CBEMS 125C Mass Transfer, Spring 2015, Homework 4
Due 05/01/2014 by 5 pm in ET 916
1. We are interested in the rate of transfer of a gaseous species in a nonisothermal film around a sphere. Problems like this arise sometimes in
connection with drying of d