With the aid of a suitable example and labelled diagrams write a
detailed note on the physical behaviour of aqueous solutions of
ionic surfactants. Choosing at least three physical properties to
explain clearly the variance in each physical property as a
function of surfactant concentration.
Need to do this using excel formulas
Note: there are 4 worksheets - one for each
problem
ST-2
NET INCOME AND CASH FLOW
Last year Rattner
Robotics had the following financials (in $
millions):
Operating income (EBIT)
$5
Depreciation
1
Interest
1
Tax rate
40%
Current assets (year end)
14
Accounts payable
3
Accruals
1
Net plant and equipment
15
Depreciation is only non cash item
$ millions
a. What was the
company's net income?
EBIT
Interest
EBT
Taxes
Net...
Show ALL work including steps used during computations
using formulas and diagrams when appropriate. Write a statement
explaining the meaning of your computations (conclusions) for all
problems- hypothesis tests and confidence intervals.
A researcher studied whether pregnant women who consumed more than
800 mg of caffeine per day had babies with a lower birth weight (in
lbs). The results are in the table below:
Caffeinated women’s babies weights
7.5
6.7
5.2
6.8
7.4
7.7
5.6
6.9
Non-caffeinated women’s babies weights...
Show ALL work including steps used during computations
using formulas and diagrams when appropriate. Write a statement
explaining the meaning of your computations (conclusions) for all
problems- hypothesis tests and confidence intervals.
Given below are the birth weights of babies born to mothers who
took special vitamin supplements while pregnant:
3.53 4.57
3.93 4.33
3.39 3.68
4.68 3.52 3.84
3.12 4.29
2.27 4.13
4.47 3.22
3.43 2.64 3.40
a. Make a 95% confidence interval for the mean weight of babies...
Note: Please write down the formulas clearly. Thank you
The office occupancy rates were reported for four California
metropolitan areas.
Do the following data suggest that the office vacancies were
independent of the metropolitan area?
Run a hypothesis test at alpha of 0.05. What is your
conclusion?
Observed Frequencies
Occupancy Status/Metropolitan Area
Los Angeles
San Diego
San Francisco
San Jose
Total
Occupied
160
116
192
174
642
Vacant
40
34
33
26
133
Total
200
150
225
200
775
Writing Equations for Reactions
Write the correct formulas for each reactant and place a yield
arrow (→) after the last reactant.
Identify reaction type: single or double displacement, using
the guidelines outlined thus far.
If you determine that a reaction will occur, write the correct
formula(s) of the products after the If you determine that a
reaction will not occur, simply write “no reaction” after the
arrow.
Balance the equation (to ensure mass conservation).
Be...