Reference no: EM131135575
The following volumes of a standard 10.0 ppb F solution were added to four 10.00-mLaliquots of a water sample: 0.00, 1.00, 2.00, and 3.00 mL. Precisely 5.00 mL of a solution containing an excess of the strongly absorbing AI-acid alizarin garnet R complex was added to each of the four solutions, and they were each diluted to 50.0 mL. The fluorescence intensities of the four solutions were as follows:
(a) Explain the chemistry of the analytical method.
(b) Construct a plot of the data.
(c) Use the fact that the fluorescence decreases with increasing amounts of the F- standard to derive a relationship like Equation 1-3 for multiple standard additions. Use that relationship further to obtain an equation for the unknown concentration cx in terms of the slope and intercept of the standard additions plot, similar to Equcation 1-4.
(d) Use linear least squares to find the equation for the line representing the decrease in fluorescence relative to the volume of standard fluoride Vs.
(e) Calculate the standard deviation of the slope and intercept.
(f) Calculate the concentration of F- in the sample in parts per billion.
(g) Calculate the standard deviation of the result in (e).
|
Describe the history of cloud computing
: Explain why “cloud computing” is growing in usage. Explain how a “common infrastructure” allows for “scalability”. Explain what “location independence” means. Describe the history of “cloud computing”.
|
|
Create a mock data set table
: You will demonstrate your knowledge of correlations and multiple regression. Refer back to the week 6 multimedia resources for correlations, regression analyses, and regression lines. Define the variables. Include information on how the data is c..
|
|
What are your thoughts on facilities such as level i
: What are your thoughts on facilities such as Level I Trauma Centers who have a higher level of acuity face lower reimbursements when the patients arrived in an almost reversible condition?
|
|
Addition plus publishes math textbooks for middle
: AdditionPlus publishes math textbooks for middle schools in western Pennsylvania. AdditionPlus sold 1 million textbooks last year for $14 million in revenue. Each textbook uses $1 in paper, ink, and binding, and is assigned $1 in untraceable mater..
|
|
Explain the chemistry of the analytical method
: Use the fact that the fluorescence decreases with increasing amounts of the F- standard to derive a relationship like Equation 1-3 for multiple standard additions. Use that relationship further to obtain an equation for the unknown concentration c..
|
|
Why is cloud computing important
: Why is “cloud computing” important? What does C.L.O.U.D. stand for? What value is “utility pricing” in the field of “cloud computing”?
|
|
What is the difference between m-commerce and e-commerce
: What is the difference between “m-commerce” and e-commerce? In the early development of “m-commerce” what role did SMS play? How does “m-commerce” add to a firm’s value chain?
|
|
How develop professional partnerships with health care team
: As a health care provider, discuss ways in which you will establish a helping hand and healing relationship with your patient and their families. How will you develop professional partnerships with health care team members in your clinical practice..
|
|
The company purchased inventory from jay company
: On May 10, the company purchased inventory from Jay Company for $70,000, terms 3/10, n/30. Purchases and accounts payable are recorded at net amounts (perpetual method is used). The invoice was paid on May 18. Instructions: 1. Prepare the Journal ..
|