Analytical Chemistry Lab Questions: Calibration of Volumetric Glassware Glasswates are sometimes designated as class A or...
Analytical Chemistry Lab Questions: Calibration of Volumetric Glassware
Glasswates are sometimes designated as class A or B. what class will you use for more accurate results? Provide a justification for your answer.
Homework Answers
Glasswares are the utensils required for analytical purpose to measure and caliberate the amount of solution to prepare the solution with required concentration.
The required concentration measured in terms of pH.
The glasswares fall under the classification of claa A and class B. These glass wares are obtained experimentally from ASTM which indicate its tolerance towards volumetric stress. ASTM is an international organization such as ISO and approves the quality of the glass wares for lab use.
Class A glass wares are the first purpose and made of fresh glass having accurate measurement while class B wares obtained from pre used glasses generally having ordinary measurement and used for general purposes.
The tolerance of class A is good in comparison to class B wares and thus Class A wares are used more frequently in lab for practice purpose.
Add Answer to:
Analytical Chemistry Lab Questions: Calibration of
Volumetric Glassware
Glasswates are sometimes designated as class A or...
This is for a calibration lab for analytical chemistry. Can someone please explain how to report...
This is for a calibration lab for analytical chemistry. Can someone please explain how to report the uncertainty of the electronic balance that I used in lab for my lab results. We used a measuring pipette to weigh out 2 ml, 4ml, 6ml, etc. of water into a weigh bottle. Three replicate weights were recorded for each measurement. I was told to do a minimum of 3 weight measurements for the weigh bottle alone to calculate the uncertainty of the...
1. What do volumetric glassware measure? What types of volumetric glassware will you be using in...
1. What do volumetric glassware measure? What types of volumetric glassware will you be using in this experiment? 2. What is density? How is it calculated? 3.Define meniscus. State how you use the meniscus in making volumetric measurements. Draw a sketch of a meniscus for water in a graduated cylinder. 4. Define accuracy and precision. Explain what the “reliability of a measurement” means. (These concepts can be found in Chapter 1 of your text.) 5. Why will you calculate accurate...
23.40245 What's the proper way to report (write) the reading shown in the analytical balance shown in t...
23.40245 What's the proper way to report (write) the reading shown in the analytical balance shown in the figure A) 23.402 B) 23.40245 C) 23.4025 D) 23.4 E) Any of the answers A-D are valid answers. How would you notate (write) the amount of fluid delivered from the "fill line" of the volumetric pipette shown in the figure, if the following markings are on the pipette: 25 mL +/- .02 mL TD at 25 C A) 25.00 mL B) 25.0...
organic chemistry lab ISOLATION OF NATURAL PRODUCTS: EUGENOL ( organic chemistry lab ) Questions Explain why...
organic chemistry lab
ISOLATION OF NATURAL PRODUCTS: EUGENOL ( organic chemistry lab
)
Questions Explain why the distillate from the distillation was turbid. (0.5 marks) Why anhydrous magnesium sulphate was used in this experiment? (0.5 marks) Discuss two other methods (other than distillation and solvent extraction] that could be used of extraction of essential oils. (0.5 marks) Do not answer briefly, make sure you provide enough details to score the full mark Questions Explain why the distillate from the distillation...
5A1: Analyzing Lab Results In the table below are the results from four analytical labs, each...
5A1: Analyzing Lab Results In the table below are the results from four analytical labs, each of which analyzed the same soil sample for its benzene content. The actual concentration of benzene in the soil is 25 ppt Reported Concentration of Benzene in a Soil Sample (ppb) Replicate Lab Lab Lab Lab 25 1. Compare the four sets of data a. Which lab do you think has the most accurate data? b. Which lab has the most precise data? c....
combinatorial chemistry; ester synthesis Fundamentals of Organic Chemistry Lab Post-Lab Questions 1. If you were doing...
combinatorial chemistry; ester synthesis
Fundamentals of Organic Chemistry Lab Post-Lab Questions 1. If you were doing these experiments on a larger scale, describe two ways that you could improve the yield of the target ester What is the point of adding sulfuric acid to the reaction? How about the heat? 2. Pick your favorite of the esters you made, and write the mechanism for its formation. 3.
5A1: Analyzing Lab Results In the table below are the results from four analytical labs, each...
5A1: Analyzing Lab Results In the table below are the results from four analytical labs, each of which analyzed the same soil sample for its benzene content. The actual concentration of benzene in the soil is 25 ppb. Reported Concentration of Benzene in a Soil Sample (ppb) Replicate Lab A Lab B Lab C Lab D 1 25 19 25 28 2 29 29 25 27 3 21 30 27 27 4 23 16 25...
answers for this pre/post lab Name: Date: Lab Section Colorimetric Pre/Postlab Questions 1. What iron species...
answers for this pre/post lab
Name: Date: Lab Section Colorimetric Pre/Postlab Questions 1. What iron species give rise to the orange color upon addition of 1,10-phenanthroline to an iron(II) solution? 2. How are percent transmittance and absorbance related algebraically? (Be able to convert %T to 4 and 4 to %7:) 3. What are the five fundamental components of a spectrophotometer? 4. State and define all terms (including units) in the Beer-Lambert law. 5. What is the purpose of preparing a...
Organic chemistry lab on Oxidation Puzzle Sample Questions 1. 2. 4. Write a mechanism for the...
Organic chemistry lab on Oxidation Puzzle
Sample Questions 1. 2. 4. Write a mechanism for the reaction of 2-butanol with sodium hypochlorite in an acetic acid solution. Provide two disadvantages associated with using dichromate for the process of oxidation (i.e. justify why you will be using NaOCl instead of dichromate). What is the purpose of adding NaHSO, solution to the reaction? Draw all of the possible products which could form if two equivalents of NaOCI are used in the oxidation...
organic chemistry II lab help 1-4 plz Post-Lab Questions 1. Give the products from the following...
organic chemistry II lab help 1-4 plz
Post-Lab Questions 1. Give the products from the following reactions Nabi CHOM Nath CH, OH 2. What key IR and NMR absorptions would allow you to determine that the products from the reactions above have been successfully synthesized? Ignore absorption also found in the reactant 3. Nal, usually reacts slowly or not at all with esters. Therefore, LiAlH, is often needed to reduce esters. Why do you think LiAiH, is more reactive than...
23.40245 What's the proper way to report (write) the reading shown in the analytical balance shown in the figure A) 23.402 B) 23.40245 C) 23.4025 D) 23.4 E) Any of the answers A-D are valid answers. How would you notate (write) the amount of fluid delivered from the "fill line" of the volumetric pipette shown in the figure, if the following markings are on the pipette: 25 mL +/- .02 mL TD at 25 C A) 25.00 mL B) 25.0...
organic chemistry lab
ISOLATION OF NATURAL PRODUCTS: EUGENOL ( organic chemistry lab
)
Questions Explain why the distillate from the distillation was turbid. (0.5 marks) Why anhydrous magnesium sulphate was used in this experiment? (0.5 marks) Discuss two other methods (other than distillation and solvent extraction] that could be used of extraction of essential oils. (0.5 marks) Do not answer briefly, make sure you provide enough details to score the full mark Questions Explain why the distillate from the distillation...
5A1: Analyzing Lab Results In the table below are the results from four analytical labs, each of which analyzed the same soil sample for its benzene content. The actual concentration of benzene in the soil is 25 ppt Reported Concentration of Benzene in a Soil Sample (ppb) Replicate Lab Lab Lab Lab 25 1. Compare the four sets of data a. Which lab do you think has the most accurate data? b. Which lab has the most precise data? c....
combinatorial chemistry; ester synthesis
Fundamentals of Organic Chemistry Lab Post-Lab Questions 1. If you were doing these experiments on a larger scale, describe two ways that you could improve the yield of the target ester What is the point of adding sulfuric acid to the reaction? How about the heat? 2. Pick your favorite of the esters you made, and write the mechanism for its formation. 3.
answers for this pre/post lab
Name: Date: Lab Section Colorimetric Pre/Postlab Questions 1. What iron species give rise to the orange color upon addition of 1,10-phenanthroline to an iron(II) solution? 2. How are percent transmittance and absorbance related algebraically? (Be able to convert %T to 4 and 4 to %7:) 3. What are the five fundamental components of a spectrophotometer? 4. State and define all terms (including units) in the Beer-Lambert law. 5. What is the purpose of preparing a...
Organic chemistry lab on Oxidation Puzzle
Sample Questions 1. 2. 4. Write a mechanism for the reaction of 2-butanol with sodium hypochlorite in an acetic acid solution. Provide two disadvantages associated with using dichromate for the process of oxidation (i.e. justify why you will be using NaOCl instead of dichromate). What is the purpose of adding NaHSO, solution to the reaction? Draw all of the possible products which could form if two equivalents of NaOCI are used in the oxidation...
organic chemistry II lab help 1-4 plz
Post-Lab Questions 1. Give the products from the following reactions Nabi CHOM Nath CH, OH 2. What key IR and NMR absorptions would allow you to determine that the products from the reactions above have been successfully synthesized? Ignore absorption also found in the reactant 3. Nal, usually reacts slowly or not at all with esters. Therefore, LiAlH, is often needed to reduce esters. Why do you think LiAiH, is more reactive than...
Most questions answered within 3 hours.
-
Minitab Problem: Take the Lake Hume June rainfall data and find
use the processes outlined in...
asked 45 minutes ago -
X Company is trying to decide whether to continue using old
equipment to make Product A...
asked 46 minutes ago -
IN PYTHON ONLY !! Program 2: Re-work
program #5 (WeeklyHours) from the previous assignment such that...
asked 1 hour ago -
The average length of time between arrivals at a turnpike
toll-booth is 26 seconds. What is...
asked 3 hours ago -
(a) A piston at 6.1 atm contains a gas that occupies a volume of
3.5 L....
asked 4 hours ago -
Please answer true or false. Words
cannot be changed or added in to make it true...
asked 4 hours ago -
An empty test tube weighs 15.923 grams. Then,
MgCl2•6H2O is added into the test tube. After...
asked 4 hours ago -
Assume memory access is 10 units of time and disk access is
10000 units of time....
asked 4 hours ago -
1. Are all good samples random?
2. Magazines often report surveys giving statistics such as “63%...
asked 4 hours ago -
Under all the various types of market structures, firms
must eventually earn some economic profits for...
asked 4 hours ago -
Consider the following fitness regime for a single locus trait
with two co-dominant alleles: w11 =...
asked 4 hours ago -
A large cable company reports the following.
80% of its customers subscribe to its cable TV...
asked 5 hours ago