Answered: What are the important considerations…

Science

Chemistry

What are the important considerations in reporting analytical results?

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter27: Molecular Fluorescence Spectroscopy

Section: Chapter Questions

Problem 27.9QAP

See similar textbooks

Related questions

Q: What are replicates in Analytical Chemistry? O The component of a sample that repeats over different…

A: Analytical chemistry is the repeated analysis of a single sample and is a measures of the greatest…

Q: Determine the molar concentration of food dye in the sample

A: We are given absorbance of analyzed sample to be 0.349 we have to find molar concentration

Q: Carbon and oxygen combine to form carbon dioxide. What are the reactants, or what is the reactant,…

Q: In a gravimetric determination of lead content in brass, there is a constant loss by solubility of…

A: Given: The mass of lead lost by solubility is 1.55 mg. The mass percentage of lead present in 0.3514…

Q: how do you convert 50 microliters to dekaliters using dimensional analysis

Q: It is always important to label everything in the dispensary or the medicinal chemistry laboratory.…

A: We can use two different techniques to distinguish between Aspirin and paracetamol namely…

Q: Distinguish the difference between a coefficient and a subscript?

A: 1.Subscripts are part of the chemical formulas of the reactants and products which indicates the…

Q: Use the lab introduction to answer the following question. When answering this problem, report the…

A: The unknown concentration of a solution can be identified by determining the absorbance value of the…

Q: On the molecular level, what does it mean for a solid sample to be pure?

A: Applying concept of pure solid / substance via molecular basis explanation.

Q: why is the separation of mixtures into pure or relatively pure substances so important when…

A: In-order to perform a chemical analysis, separation of mixture into pure substances is important.…

Q: A student walks over to the balance area with an Erlenmeyer flask in their hand. Before reaching the…

A: Erlenmeyer flask is a conical flask used for performing titrations in the laboratory.

Q: d.) Calculate the molality of the Nace and MgCl2.6H2O solutions.

A: Mass of MgCl2.6H2O =3.6 gMass of NaCl = 1.5 gVolume of water = 25 mLDensity of water = 1 g/mLMolar…

Q: POST-LAB QUESTIONS 1. Complete the table by naming each piece of glassware below. 250 ml Glassware…

Q: The analyst would use an analytical balance during sample analysis, what would you recommend her/him…

A: Make sure that you place the balances in an area with constant humidity and temperature. The…

Q: B C D E total mass total volume of water in the beaker (ml) 10.05 10.05 20.05 20.05 30.05 30.05 11…

Q: When answering this problem, report the answer with the appropriate number of significant figures.…

A: Solution - According to this question - Given - Formula - no of mole = molarity x volume thus, no of…

Q: For accurate measurements of unknown quantities, which concentration range - dilute or concentrated…

Q: The color change of a chemical requires an overtitration of 0.04 mL. Calculate the percent relative…

A: Given, Experimental value = 50 mL + 0.04 mL = 50.04 mL True value = 50 mL Calculating the percent…

Q: When answering this problem, report the answer with the appropriate number of significant figures.…

A: In the given question we have to calculate the molar concentration of food dye. we know that, the…

Q: The mass of a beaker is 5.333 g. After 5.00 mL of a concentrated hydrochloric acid solution is…

A: Given the weight of empty beaker and also given the weight of beaker with HCl. Hence, the weight of…

Q: Describe two applications of the use of dilutions at home.

Q: A researcher has developed a new analytical method to determine the percent by mass on in solids. To…

Q: Describe how volumetric analysis methods are used in quantitative methods. Please provide at least…

Q: 13 What occurs within the beaker as the teacher mixes the vinegar and milk? A A chemical change that…

A: Multiple choice questions are answered with explanation.

Q: Name the different methods that can be used for separation of components of a mixture.

A: The different methods that can be used for separation of components of a mixture are to be given.

Q: From the calibration curve (yellow table calibration data) calculate the concentration of sugar in…

A: Given:

Q: The vapor pressure of liquid propanol, C3H,OH, is 100 mm Hg at 326 K. A sample of C3H,OH is placed…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: STEPS IN A TYPICAL ANALYTICAL QUANTITATIVE ANALYSIS Select a method 2. Is sample soluble? 3. yes 5.…

A: Flow diagram Quantitative analysis.

Q: Describe at least three systematic errors that might occur while weighing a solid on an analytical…

A: Three systematic errors that might occur while weighing a solid on an analytical balance have to be…

Q: what are the differences and similarities of "The Chemical Professional's Code of Conduct" with Good…

A: The Chemical professional code of conduct is established to maintain the scientific integrity and…

Q: Is distillation a good method for separating a mixture of water and hexane? Why or why not?

A: distillation, process involving the conversion of a liquid into vapour that is subsequently…

Q: O MEASUREMENT Adding or subtracting and multiplying or dividing measurements A chemistry student…

A: Given: Mass of graduated cylinder = 1.5 g Mass of ( graduated cylinder + NaOH )…

Q: A sample of freshly precipitated and filtered silver chloride weighs 459.0 mg. If 1.00% of the…

Q: In its most basic form, what is significant figures? Why is it necessary to learn it? What is its…

A: Significant figures basically provides the clear picture of the actual measurements which are…

Q: Suppose you are measuring the mass of a solid sample on a balance using a weigh boat. You record the…

Q: hy is it inappropriate to report yields with decimal-place accuracy (as opposed to whole numbers)?

A: Percent Yield of a reaction is always rounded of as a whole number and not with decimal place their…

Question

What are the important
considerations in reporting analytical
results?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Quality Assurance and Calibration Methods

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

A new analytic instrument is capable of detecting picogram quantities of a chemi-cal substance. How many times more capable is this instrument than one that candetect nanogram quantities of the same chemical?
List and define the indicators that are used to assess the performance of a specific analytical method under specified conditions.
What are the advantages and disadvantages of volumetric and gravimetric analysis?
In the Analytical Chemistry laboratory, one of the B.Sc student Ms. Fatma wanted to analyze the presence of Iron(II) ion in the water samples collected from Sohar Industrial Area in the Sultanate of Oman and analyzed by Spectrophotometric method. (1) 250.00 mL of this water sample (Solution A) known to contain unknown amount of FeSO4. She has diluted Solution A by a dilution factor 10 to make 250.00 mL solution, which she labeled Solution B. Using Spectrophotometer, she has measured the absorbance value (0.642) for Solution B at 508 nm using 1.00 cm cell (cuvet). The molar absorptivity value for Fe2* ion at 508 nm is ɛ508 = 30.8 M-1cm1. (i) What volume of the solution A did she require to make the 250.00 mL of Solution В? (ii) in (i)? What instrument should she use to transfer the volume of the Solution A calculated (ii) Concentration of FeSO4 in Solution B. (iv) Concentration of FeSO4 in Solution A. Mass of FeSO4 in Solution A (Show your calculation) (v)
B) Assess the critical aspects of chemistry involved in sedimentatic
"Analytical data are never more reliable than the sampling technique". Explain this statement.
2. The analytical ability of two lab technicians was compared by having each perform analyses for arsenic using the same method on samples having the same origin. For analyst A, s.d. = 0.12%, N=6; and for analyst B, s.d. = 0.06%, N-5. Do these results suggest a difference in the precision of the two chemists?
II. b) What is the difference between liquid-liquid, solid-liquid and solid-phase extraction? Complete the table below and sort the following examples in the correct column: Steeping tea, washing an organic phase (workup), brewing beer, chemical desalting of crude oil, activated carbon sugar decolorization. liquid-liquid solid-liquid solid-phase Phase that contains analyte before extraction? Phase that contains analyte after extraction? Example(s)
Can paper chromatographt be used to separate and identify very volatile substances? Explain.
What is instrumental analysis in chemistry?
2. Quantitative analysis student Analytical analyzed an ore sample for its lead content and obtained a mean of 4.75% Pb for five measurements. If the certified true value is 4.50%, what is the (a) percent error? (b) percent accuracy?
1. Differentiate the following terms. Accuracy Precision 2. What are the advantages of using the analytical balance in analytic chemistry? Enumerate at least two then explain each. 3. What are the factors affecting the discrepancies in accuracy and precision? Enumerate at least four then explain each.