Assume that the following relationship holds:

Maintenance Costs = (v * Machine Hours) + f

REQUIRED

Estimate the values of v and f and the cost equation, using,

1. the High-Low Method, and

2. the Linear Regression method.

Note, to use the linear regression method, you MUST use the Microsoft Excel program.

Make sure to report

1. The values of v and f;

2. A scatter plot of the data points, and

3. The adjusted R-square; explain what the adjusted R-square means.

4. The cost equation in the form of Y = vx + f, substituting the values for v and f from the regression output.

YOUR SUBMISSION MUST BE IN EXCEL. PLEASE INCLUDE AN EXCEL ATTACHMENT OR HYPERLINK! ONE WORKBOOK, WITH A WORKSHEET FOR EACH ANALYSIS (i.e., High-Low Method and Regression Analysis respectively).  

Write a C++ program that inputs a sequence of integers into a vector, computes the average, and then outputs the # of input values, the average, and the values themselves. There are 0 or more inputs values, followed by a negative value as the sentinel; the negative value is not stored and not counted. The following sample input:

10
20
0
99
-1

would produce the following output:

N: 4
Avg: 32.25
10
20
0
99

The main program has been written for you, your job is to implement the two functions InputData andGetAverage. See the comments in the "student.cpp" file for specific implementation details.

main.cpp

#include <iostream>
#include <vector>

using namespace std;

// functions from student.cpp:
int InputData(vector<int>& V);
double GetAverage(vector<int> V, int N);

int main()
{
// assume at most 100 inputs:
vector<int> inputs(100);
int N;
double avg;

N = InputData(inputs);
avg = GetAverage(inputs, N);

cout << "N: " << N << endl;
cout << "Avg: " << avg << endl;

for (int i = 0; i < N; ++i)
{
cout << inputs.at(i) << endl;
}

return 0;
}

student.cpp

int InputData(vector<int>& V)
{

// TODO
  
return 0;
}

//
// GetAverage
//
// Returns the average of the first N values in the vector; if N is 0 then
// 0.0 is returned.
//
double GetAverage(vector<int> V, int N)
{

// TODO

return 0.0;
}

Write a C++ program that inputs a sequence of integers into a vector, computes the average, and then outputs the # of input values, the average, and the values themselves. There are 0 or more inputs values, followed by a negative value as the sentinel; the negative value is not stored and not counted. The following sample input:

10
20
0
99
-1

would produce the following output:

N: 4
Avg: 32.25
10
20
0
99

The main program has been written for you, your job is to implement the two functions InputData and GetAverage. See the comments in the "student.cpp" file for specific implementation details.

main.cpp

#include <iostream>
#include <vector>

using namespace std;

// functions from student.cpp:
int InputData(vector<int>& V);
double GetAverage(vector<int> V, int N);

int main()
{
// assume at most 100 inputs:
vector<int> inputs(100);
int N;
double avg;

N = InputData(inputs);
avg = GetAverage(inputs, N);

cout << "N: " << N << endl;
cout << "Avg: " << avg << endl;

for (int i = 0; i < N; ++i)
{
cout << inputs.at(i) << endl;
}

return 0;
}

student.cpp

int InputData(vector<int>& V)
{

// TODO
  
return 0;
}

//
// GetAverage
//
// Returns the average of the first N values in the vector; if N is 0 then
// 0.0 is returned.
//
double GetAverage(vector<int> V, int N)
{

// TODO

return 0.0;
}

1. What is typically the mobile phase in gas chromatography?

2. What affect is expected for retention times in a gas chromatography experiment if the temperature of the column is reduced?

3. If a significant clog in a 30 m capillary column is so severe that it has to be trimmed to 20 m, how will this affect its ability to effectively separate mixtures of compounds?

4. Why is CH2Cl2 the first peak observed in the gas chromatograms for this experiment?

5. If a student submitted a sample of water for GC analysis because they were confused about what was their organic layer and what was their aqueous layer, would a solvent peak be observed in the gas chromatogram of the sample assuming it was analyzed? Remember our gas chromatograph uses a FID.

1. What is typically the mobile phase in gas chromatography?

2. What affect is expected for retention times in a gas chromatography experiment if the temperature of the column is reduced?

3. If a significant clog in a 30 m capillary column is so severe that it has to be trimmed to 20 m, how will this affect its ability to effectively separate mixtures of compounds?

4. Why is CH2Cl2 the first peak observed in the gas chromatograms for this experiment?

5. If a student submitted a sample of water for GC analysis because they were confused about what was their organic layer and what was their aqueous layer, would a solvent peak be observed in the gas chromatogram of the sample assuming it was analyzed? Remember our gas chromatograph uses a FID.

I need to find the theoretical yield of benzoic acid from this lab experiment. The first part of the experiment involved this formula

C6H5COOH + NaOH ------> C6H5COO-Na+ + H2O where we mixed 30 mL of a stock solution of toluene-benzoic acid mixture and then added 15.0 mL of aqueous sodium hydroxide to seperate the two layers.

In the second part, C6H5COO-Na + Hcl-------> C6H5COOH + NaCl we took the aqueous layer extracted from the mixture in the first part and added 70 mL of 10% aqueous hydrochloric acid to acidify it.

A week later once it was dried, we obtained .5002 grams of benzoic acid.

Please show the work of how you found the theoretical yield.

Based on the grinard reagent/reaction (preparation of triphenylmethanol).

4. If you don't oven-dry your glassware or use a drying tube, what byproduct will you produce? Illustate its formation by a chemical reaction.

5. You have air-dried your glassware and used a drying tube during the experiment. However, you used a wet methyl benzoate would the byproduct formed be different from that of question 4 above? Explain your answer.

6. Triphenylmethanol (the final product to be obtained during this experiment) can also be prepared by the reaction of PhMgBr with diethylcarbonate (CH3CH2O)2C=O, followed by H+ workup. Draw the corresponding chemical reaction, and explain your answer.

Question 1:

a. The first four ionization energies of an element are approximately:
738 kJ mol-1, 1450 kJ mol-1, 7.7 x 103 kJ mol-1, and 1.1 x 104 kJ mol-1.
Which family (group) of elements does this element belong? Explain.

b. In a photoelectron spectroscopy experiment the kinetic energy of the ejected electron from
a potassium atom is found to be 5.34 x 10-19 J using a UV source of wavelength 162 nm.
Calculate the ionization energy.

i. It is assumed that this ionization energy corresponds to the valence electron of
potassium in the 4s sublevel. How could you adjust this experiment to be sure that
this is the correct assumption?