Math 415 S13
Midterm I (Version B)
February 14, 2013
.
.
Name & UIN#:
This is a closed-book, closed-notes exam. No electronic aids are allowed.
Read each question carefully. Unless otherwise stated you need to justify your
answer. Do not use results not
Jar Tests:
Consider: Time for floc, floc size, turbidity, colour, pH reqmnts, coag
aids reqd
- Some mechanisms can lead to restabilization of flocs: if too much
coagulant is added, charge on colloidal particle may be reversed
instead of neutralized
- Jar
Test 1 Practice Questions (First set)
(1) Consider the following linear system and answer the questions.
= 2
x+yz
3x 5y + 13z = 18
x 2y + 5z = k
(a)
(b)
(c)
(d)
Write the augmented matrix.
Find the augmented matrix. For which values of k the system is c
Math 415 S13
Midterm II (Version A)
March 14, 2013
.
.
Name & UI#:
This is a closed-book, closed-notes exam. No electronic aids are allowed.
Read each question carefully. Unless otherwise stated you need to justify your
answer. Do not use results not pr
Test 1 Practice Questions (Second set)
(1) Determine which of the following transformation are linear. For those, write the
associated matrix. (If you can write a transformation as a matrix multiplication then
it is automatically linear, no further comput
ADSORPTION
Adsorption is the process in which matter is
extracted from one phase and concentrated at the
surface of a second phase. (Interface accumulation).
This is a surface phenomenon as opposed to
absorption where matter changes solution phase,
e.g. g