Need help for questions 2 and 4Homework Answers
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Need help for questions 2 and 4
G. C. 1-7 Determination of the Dye Concentration in...
please help with question 1 and 3 part c Name: 8 9 Lab Section: 7 Pre-lab: The Concentration of Riboflavin 1. The gi...
please help with question 1 and 3 part c
Name: 8 9 Lab Section: 7 Pre-lab: The Concentration of Riboflavin 1. The given absorbance spectrum is recorded for a dye. Which is the most likely color of this dye? a. Blue-green b. Colorless c. Red d. Black M stock solution is diluted to 10.00 ml, what is the final 2. IF 4.00 ml of a 5.00 X 10 concentration? 3. The absorbance of known concentrations of blue food dye were...
Red food dye (FD&C Red 40, also known as allura red AC) has the formula C18H14N2Na2O8S2....
Red food dye (FD&C Red 40, also known as allura red AC) has the formula C18H14N2Na2O8S2. 1. What is the molar mass of FD&C Red 40? To make a solution you take 0.0097 g of FD&C Red 40. 2. How many moles of FD&C Red 40 are in your sample? You dissolve the sample of FD&C Red 40 in enough water to make 250.0 mL of solution. We call this the stock solution. 3. What is the concentration of the...
LEILU.23.27 Eugenia Bueso-Alas: Attempt 2 UUTUUU-Dye SD Incorrectly Low Question 3 (20 points) An unknown food-dye...
LEILU.23.27 Eugenia Bueso-Alas: Attempt 2 UUTUUU-Dye SD Incorrectly Low Question 3 (20 points) An unknown food-dye is analyzed by the method used in this experiment. The absorbance of 5 standard solutions is plotted vs. their concentration (molarity) and a straight line is obtained with the formula: Abs = 4.350x +0.06 An unknown food-dye soluton is diluted and it's absorbance is found to be 0.65. What is the molarity of the diluted unknown, to two significant figures? Do not type units...
Chem 162 Experiment 2 Spectrophotometric Determination of Ion Concentration by Beer's Law Pre-Lab Questions a. A...
Chem 162 Experiment 2 Spectrophotometric Determination of Ion Concentration by Beer's Law Pre-Lab Questions a. A sample absorbs 80% of the light passed through it at a certain wavelength. What is the absorbance of the sample at this wavelength? b. What would the absorbance be at the same wavelength if the sample were diluted by half? Assume the same size sample cell was used. 2, A 0.070 M solution has an absorbance ofA = 0.689. If a 1.00 cm path...
Percent by mass of dye in Fruit Loops cereal 11.56*100 QUESTIONS: 1. If the molar extinction coefficient (E) of a...
Percent by mass of dye in Fruit Loops cereal 11.56*100 QUESTIONS: 1. If the molar extinction coefficient (E) of a compound is 2.5 x 108 moli'cmat $28 nm and the Abs Cat 528 nm) 0.254 Dind the concentration of that solution. (assume a path length of 1.0 cm) 2. If a student measures a sample that gives an Abs = 1.85 at the 2max, is this data reliable? If not, then what might they do to improve their data? 3....
Hi, I need help with answering these questions. Thank you. 1) What is the molar absorptivity...
Hi, I need help with answering these questions. Thank you.
1) What is the molar absorptivity of riboflavin (with units)?
Assume that the cuvette has a pathlength of 1.00 cm and that the
blank had an absorbance of 0.00.
2. If a sample of riboflavin with an unknown concentration had
an absorbance of 0.597, what is the concentration of the
sample?
3. A sample of riboflavin is prepared by crushing 5 tablets and
dissolving them in enough water to create...
Please help I am completely confused, I included the 2 graphs needed for this post lab....
Please help I am completely confused, I included the 2
graphs needed for this post lab. Thank you!
Postlab Assignments . (a) Using your own standard curve, the line equation you generated and Beer's law equation Equation 1) calculate the molar absorpivity (e) of blue dye. For all your measurem cuvette used is 1.00 cm. Use this as the value of b in Equation 1 ents, the size of (b) Using Beer's law equation again, what does a high value...
1)I need introduction will be different from this introduction but in the same subject and the sa...
1)I need introduction will be different from this introduction
but in the same subject and the same idea (with littel
different)
2)Select the discussion ,results ,conclusion , methods and
references from this search
INTERNATIONAL JOURNAL OF SCIENTIFIC& TECHNOLOGY RESEARCH VOLUME 2, ISSUE 9 SEPTEMBER 2013 ISSN 2277-8616 Dyes Removal From Textile Wastewater Using 1 PREFACE 2 MATERIALS AND METHODS the largest Bangladesh, the textile industry manufacturing industries. in every stage of textile industry 2.1 Sample and Adsorbents Collection various types...
I need help doing just the questions, not the graph or the conclusion F17 MATERIALS 0.12...
I
need help doing just the questions, not the graph or the
conclusion
F17 MATERIALS 0.12 g [Fe(phen)3]Cl2 (student's red crystals from the previous experiment) 0.5 mL unknown [Fe(phen)3]Cl2 solution 175 mL DI water A. Series of Dilutions: Concentration of stock solution 3.15x103M 105gx mol 667.354 IL 0.05004 Concentrations of the series of dilutions Solution Concentration 0.2/25 2.52x10m 0.4/25 5.04×105m 0.6/25 7.56 X10 sm 0.8/25 1.0088 10" 1.0/25 1.26x10 "m Abs atmas 0.20_ Unknown 514nm 0.52 1.42 Solution 0.2/25 0.4/25...
1) Write a Reaction equation using 4- aminobenzenesulfulfonic acid (aniline derivative) and 8-ani...
1) Write a Reaction equation using 4- aminobenzenesulfulfonic
acid (aniline derivative) and 8-anilino-1-naphthalenesulfonic acid
(coupling agent). Write the mechanism.
SYNTHESIS OF AZO DYES INTRODUCTION Humans' love of color dates back almost to prehistoric times, yet it is not actually until the modern era that the full range of the rainbow has been accessible to the majority of people irn their clothes and other textiles. Ancient or medieval times have often been described as being quite splendid with their "tyrian purple"...
please help with question 1 and 3 part c
Name: 8 9 Lab Section: 7 Pre-lab: The Concentration of Riboflavin 1. The given absorbance spectrum is recorded for a dye. Which is the most likely color of this dye? a. Blue-green b. Colorless c. Red d. Black M stock solution is diluted to 10.00 ml, what is the final 2. IF 4.00 ml of a 5.00 X 10 concentration? 3. The absorbance of known concentrations of blue food dye were...
LEILU.23.27 Eugenia Bueso-Alas: Attempt 2 UUTUUU-Dye SD Incorrectly Low Question 3 (20 points) An unknown food-dye is analyzed by the method used in this experiment. The absorbance of 5 standard solutions is plotted vs. their concentration (molarity) and a straight line is obtained with the formula: Abs = 4.350x +0.06 An unknown food-dye soluton is diluted and it's absorbance is found to be 0.65. What is the molarity of the diluted unknown, to two significant figures? Do not type units...
Chem 162 Experiment 2 Spectrophotometric Determination of Ion Concentration by Beer's Law Pre-Lab Questions a. A sample absorbs 80% of the light passed through it at a certain wavelength. What is the absorbance of the sample at this wavelength? b. What would the absorbance be at the same wavelength if the sample were diluted by half? Assume the same size sample cell was used. 2, A 0.070 M solution has an absorbance ofA = 0.689. If a 1.00 cm path...
Percent by mass of dye in Fruit Loops cereal 11.56*100 QUESTIONS: 1. If the molar extinction coefficient (E) of a compound is 2.5 x 108 moli'cmat $28 nm and the Abs Cat 528 nm) 0.254 Dind the concentration of that solution. (assume a path length of 1.0 cm) 2. If a student measures a sample that gives an Abs = 1.85 at the 2max, is this data reliable? If not, then what might they do to improve their data? 3....
Hi, I need help with answering these questions. Thank you.
1) What is the molar absorptivity of riboflavin (with units)?
Assume that the cuvette has a pathlength of 1.00 cm and that the
blank had an absorbance of 0.00.
2. If a sample of riboflavin with an unknown concentration had
an absorbance of 0.597, what is the concentration of the
sample?
3. A sample of riboflavin is prepared by crushing 5 tablets and
dissolving them in enough water to create...
Please help I am completely confused, I included the 2
graphs needed for this post lab. Thank you!
Postlab Assignments . (a) Using your own standard curve, the line equation you generated and Beer's law equation Equation 1) calculate the molar absorpivity (e) of blue dye. For all your measurem cuvette used is 1.00 cm. Use this as the value of b in Equation 1 ents, the size of (b) Using Beer's law equation again, what does a high value...
1)I need introduction will be different from this introduction
but in the same subject and the same idea (with littel
different)
2)Select the discussion ,results ,conclusion , methods and
references from this search
INTERNATIONAL JOURNAL OF SCIENTIFIC& TECHNOLOGY RESEARCH VOLUME 2, ISSUE 9 SEPTEMBER 2013 ISSN 2277-8616 Dyes Removal From Textile Wastewater Using 1 PREFACE 2 MATERIALS AND METHODS the largest Bangladesh, the textile industry manufacturing industries. in every stage of textile industry 2.1 Sample and Adsorbents Collection various types...
I
need help doing just the questions, not the graph or the
conclusion
F17 MATERIALS 0.12 g [Fe(phen)3]Cl2 (student's red crystals from the previous experiment) 0.5 mL unknown [Fe(phen)3]Cl2 solution 175 mL DI water A. Series of Dilutions: Concentration of stock solution 3.15x103M 105gx mol 667.354 IL 0.05004 Concentrations of the series of dilutions Solution Concentration 0.2/25 2.52x10m 0.4/25 5.04×105m 0.6/25 7.56 X10 sm 0.8/25 1.0088 10" 1.0/25 1.26x10 "m Abs atmas 0.20_ Unknown 514nm 0.52 1.42 Solution 0.2/25 0.4/25...
1) Write a Reaction equation using 4- aminobenzenesulfulfonic
acid (aniline derivative) and 8-anilino-1-naphthalenesulfonic acid
(coupling agent). Write the mechanism.
SYNTHESIS OF AZO DYES INTRODUCTION Humans' love of color dates back almost to prehistoric times, yet it is not actually until the modern era that the full range of the rainbow has been accessible to the majority of people irn their clothes and other textiles. Ancient or medieval times have often been described as being quite splendid with their "tyrian purple"...
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