In: Chemistry

Questions and Problems

1. Complete the table containing the summary of data below.

Summary of Solubility and Ksp Data

Sat’d Ca(IO3)2 in: Solubility (M) _______ Ksp (M3 ) ___________T˚C ___________

H2O: Solubility (M) _______ Ksp (M3 ) ___________T˚C ___________

0.0100 M KIO3 : Solubility (M) _______ Ksp (M3 ) ___________T˚C ___________

0.0100 M KCl: Solubility (M) _______ Ksp (M3 ) ___________T˚C ___________

2. Compare the values of Ksp of Ca(IO3)2 obtained for the three solvents.

(a) Which two are most nearly the same? Briefly explain. (

b) What value of Ksp would you expect for Ca(IO3)2 dissolved in 0.0100 M NaNO3 at the same temperature?

3. Is the solubility of Ca(IO3)2 greater in pure water or in 0.0100 M KCl? Briefly explain. {Hint: Consider the relative magnitudes of the ion-dipole and ion-ion forces experienced by the Ca 2+ and IO3 - ions in the two solutions.}

Chemical Equilibria: Ksp of Calcium Iodate Report Form -10

4. Calculate the molar solubility, s, of calcium iodate in 0.020 M Ca(NO3)2, a completely dissociated strong electrolyte. {NO3 - ion does not chemically interact with either Ca2+ or IO3 - .} Assume that Ksp for Ca(IO3)2 = 2.0 x 10-6 .

To set up the problem, we can write the following equations:

Material balance for calcium: [Ca2+] = s + 0.020

Material balance for iodate: [IO3 - ] = 2s

Ksp = 2.0 x 10-6 = [Ca2+][IO3 - ] 2 = (s + 0.020)(2s)2

Here in the last equation we have the solubility in s, but s is not negligible when compared to 0.020 M.

So here we are confronted with a cubic equation in s! To simplify the solution to this equation we can rearrange it into a more useful form and obtain s by successive approximations (iteration).

Solving the equation for s2 we get, s^2 = Ksp/ 4(s + 0.020) or s = 1 /2 [Ksp/( s + 0.020 )^]1/ 2

We have to find the value of s that makes both sides of the equation equal, that is the value of s we insert on the right side will yield the same value on the left side. We can start by neglecting s on the right side calculating s on the left side. The value of s obtained is then inserted on the right side and a new value of s is calculated on the left side. This iteration process is continued until two consecutive values of s calculated are the same within the precision of the measurement (significant figures).

1. Complete the ANOVA summary table and answer the questions
that follow.
Source
SS
df
MS
F
A
127.44
2
B
.222
1
A X
B
110.778
2
Within
166.00
12
Total
404.444
17
What are the F critical values for A effect, B effect, and the
interaction?
Which effects are significant? Write the results
statistically.
For each of the following, find the means for the effect of A
and the means for the B effect. Also, graph the...

1.
Consider the partially completed one-way ANOVA summary table
below.
a) Complete the remaining entries in the table.
b) How many population means are being tested?
c) Using
alphaαequals=0.05,
what conclusions can be made concerning the population means?
Source
Sum of Squares
Degrees of Freedom
Mean Sum of Squares
F
Between
?
33
?
?
Within
96
?
?
Total
165
19
Click the icon to view a table of critical F-scores for
alphaα equals=0.05
a) Complete the ANOVA table...

The data in the table below are for the economy of Nubia.
a. Complete the AE column.
Y
T
YD
C
S
I
G
X
IM
XN
AE
0
80
−80
20
−100
40
105
170
60
110
300
95
205
260
−55
40
105
170
75
95
600
110
490
500
−10
40
105
170
90
80
900
125
775
740
35
40
105
170
105
65
1,200
140
1,060
980
80
40
105
170
120
50
b. Write...

For Questions 1-4 , use the table below. It is
data for the heights (inches) for Ms. Smith’s 4th grade
class.
Student
Height (inches)
Student
Height (inches)
1
47
11
53
2
47
12
54
3
47
13
55
4
49
14
56
5
50
15
59
6
51
16
59
7
51
17
60
8
52
18
60
9
52
19
60
10
52
20
91
The median height of the students is
42.32
52.50
54.45
58.35
The standard...

1. Complete the table below, and then answer the following
questions.
Q
TC
TFC
TVC
ATC
AVC
MC
0
80
1
40
2
70
3
40
4
100
a) Suppose the firm is a price–taker and the price is $60 per
unit.
i) What quantity will it produce (find
the profit-maximizing level of output)?
ii) Calculate the profit/loss.
b) What is the shut-down price?

Please answer all of my questions
In the problems below, give a complete hypothesis test
for each problem. Make sure you include the original claim in
symbols, The null and alternative hypothesis, the significance
level, the actual formula and calculation of the test statistic,
give the p-vale or and drawing of distribution and region. Also
include the decision concerning the null hypothesis and a
conclusion stated in non-technical terms
You are concerned about the high cost of textbooks. You take...

Please answer all of my questions
In the problems below, give a complete hypothesis test
for each problem. Make sure you include the original claim in
symbols, The null and alternative hypothesis, the significance
level, the actual formula and calculation of the test statistic,
give the p-vale or and drawing of distribution and region. Also
include the decision concerning the null hypothesis and a
conclusion stated in non-technical terms
In a study of smokers who tried to quit smoking with...

Using these results, complete the table below and then use your
results to answer the questions that follow. (Please
remember to round all answers to two decimal places: 0.00 at each
step.) (23 points)
X
X-M
(X-M)2
1
14
-15.85
251.22
2
16
-13.85
191.82
3
18
-11.85
140.42
4
20
-9.85
97.02
5
23
-6.85
46.92
6
23
-6.85
46.92
7
25
-4.85
23.52
8
27
-2.85
8.12
9
28
-1.85
3.42
10
29
-0.85
0.72
11
30
0.15...

Use the following to answer Questions. The
table includes summary of data concerning advertising expenditures
and computer sales for ACME electronics.
Ad Expenditures ($1000)
Computer Sales ($1000)
2.5
6.1
3.8
4.9
3.1
5.9
2.1
6.8
What is the linear regression equation for the data?
Y = 8.88 – 1.03x
Y = 5.22 – 1.92x
Y = 6.85 + 1.03x
Y = 3.72 + 2.46x
What is the standard error of the regression model?
.2219
.3276
.7324
.9777
What is the...

[The following information applies to the questions
displayed below.]
The following summary data for the payroll period ended December
27, 2015, are available for Cayman Coating Co.:
Gross pay
$
172,000
FICA tax withholdings
?
Income tax withholdings
20,640
Group hospitalization insurance
2,540
Employee contributions to pension plan
?
Total deductions
41,650
Net pay
?
Additional information:
For employees, FICA tax rates for 2015 were 7.65% on the first
$118,500 of each employee’s annual earnings. However, no employees...

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