5. An analyst at Procter & Gamble quality control department received a sample of toothpaste to...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
5. An analyst at Procter & Gamble quality control department received a sample of toothpaste to determine the %fluoride. The analyst prepared a series of fluoride calibration standards and a total ionic strength adjusting buffer (TISAB) to standardize the fluoride electrode. The results of the potential measurements of the calibration standards are depicted on the figure. The analyst dissolved 0.2364 g of the toothpaste in 100 mL of DI water containing the TISAB. Then, measured the potential of the toothpaste solution to be -170 mV. Potential change, mV iii- Calculate the mass of fluoride in the toothpaste sample. -50 iv- Calculate the %F- in this toothpaste. -100 -150 -200 -250 -300 -10 ii- Calculate the concentration of fluoride in the toothpaste solution. i- Estimate the linear concentration range of this fluoride selective electrode. -8 Lower detection limit -6 y = -63.1x - 401.2 Slope log[F] -4 Upper (1 p- (1.5 (1.5 (1 p 5. An analyst at Procter & Gamble quality control department received a sample of toothpaste to determine the %fluoride. The analyst prepared a series of fluoride calibration standards and a total ionic strength adjusting buffer (TISAB) to standardize the fluoride electrode. The results of the potential measurements of the calibration standards are depicted on the figure. The analyst dissolved 0.2364 g of the toothpaste in 100 mL of DI water containing the TISAB. Then, measured the potential of the toothpaste solution to be -170 mV. Potential change, mV iii- Calculate the mass of fluoride in the toothpaste sample. -50 iv- Calculate the %F- in this toothpaste. -100 -150 -200 -250 -300 -10 ii- Calculate the concentration of fluoride in the toothpaste solution. i- Estimate the linear concentration range of this fluoride selective electrode. -8 Lower detection limit -6 y = -63.1x - 401.2 Slope log[F] -4 Upper (1 p- (1.5 (1.5 (1 p
Expert Answer:
Related Book For
Chemistry Principles And Practice
ISBN: 9780534420123
3rd Edition
Authors: Daniel L. Reger, Scott R. Goode, David W. Ball
Posted Date:
Students also viewed these chemical engineering questions
-
A ball is located 8 0 m above the sea level. Its initial velocity is 1 0 0 m/s and the angle between the horizontal is 37 degrees. How long will it take for the ball to hit the surface? g=9.8m/s 2
-
Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...
-
A climate model predicts that Earth's ECS is 2.0 K. If the radiative forcing from a doubling of CO2 is 3.7 Wm 2, and the Planck feedback simulated by the model is -3.4 Wm 2K what is the sum of all...
-
An archer shoots an arrow horizontally at a target 15 m away. The arrow is aimed directly at the center of the target, but it hits 52 cm lower. What was the initial speed of the arrow?
-
Presented below is a combined single-step income and retained earnings statement for Nerwin Company for 2020. Additional facts are as follows. 1. ?Selling, general, and administrative expenses? for...
-
For a unidirectional composite with a rectangular fiber array (Figure 3.18), use the equations of elasticity to set up the displacement boundary value problem for the determination of the transverse...
-
You are to record transactions completed by Fabulous Furnishings during February of this year. Beginning balances for the accounts listed below have been provided in your Working Papers. This Company...
-
3. Does your district have a person located at the school to lead the coordination of school and community partnerships? If so, what is the title of that person and what other jobs/duties is he or...
-
The Wallace Stationary Company purchases paper from the Seaboard Paper Company. Wallace produces stationary that require 1,415,000 sq. yards of stationary per year. The cost per order for the company...
-
This comprehensive problem involving Miller Design Studio covers all the learning objectives in this chapter and in the chapters on measuring business transactions and measuring business income. To...
-
10,000 Your firm is an Italian importer of British bicycles. You have placed an order with a British firm for 200,000 worth of bicycles. Payment (in pounds sterling) is due in 12 months. Contract...
-
(10) In a BST with n nodes, what is the time complexity forsearching, insertion, and deletion in worst case, respectively?What is the time complexity for these operation in average case(balanced...
-
1. Suppose the expected market risk premium is 7.5 percent and the risk free rate is 3.7 percent. The expected return on TriStar's stock is 14.2 percent. Assume the capital-asset-pricing-model holds....
-
Use the following functions to compute numerical derivatives at the given value of x: 1. f(x) = ln(x + 2), at x = -1.5 2. f(x) = ln(x + 2), at x = 2.0 3. f(x)=3-e-(2-(x-1)), at x = 1.0 4. f(x) = {1-...
-
A user flow can be interpreted in many ways. It can be regarded as an overview that describes where users can navigate your product. It can also mean the actual quality and experience of the path...
-
In 2009, the United States imported about 3.3 billion barrels of oil. Perhaps it would be better for the United States if it could end the billions of dollars of payments to foreigners by not...
-
Sue Deliveau opened a software consulting firm that immediately paid $2,000 for a computer. Was this event a transaction for the business?
-
The radioactive decay of a sample containing 121 Te produced 865 disintegrations/min. Exactly 7.00 days later, the rate of decay was found to be 650 disintegrations/min. Calculate the half-life, in...
-
Calculate the temperature of a 350-mL container that holds 0.620 mol of an ideal gas at a pressure of 42.0 atm.
-
What is the most important crystal force that holds each of the following substances together? (a) Pb (b) SiO 2 (c) P 4 (d) Buckyballs
-
If a pattern is used to model an overly broad portion of a system, the generality of resulting pattern is sacrificed. Explain with the help of an example.
-
Explain why a pattern representing rental system will not be complete and accurate.
-
What are the key characteristics of a model that makes it easily testable?
Study smarter with the SolutionInn App