Four lab groups completed the experiment listed in the lab diluting lul of FCF dye into 1ml of water.The A625 values are listed below.For brilliant blue FCF,ɛ =97000 M-1cm–1 MW = 792.8 g/mol%3DGroup #A625% solution (in originalstock sample)Percent ror(True value ofStock=0.2%)10.2440.1990.50.2090.1701530.3060.2502540.1870.1530.235a. Which group was more accurate?b. What are possible reasons group 3 had a much higher Absorbance than the others?c. What are possible reasons group 4 had a much lower Absorbance than the others?

Brilliant blue FCF (Blue 1) is a synthetic organic compound used mainly as a blue dye for processed…

Answered: Four lab groups completed the…

Curren'S Math For Meds: Dosages & Sol

11th Edition

ISBN:9781305143531

Author:CURREN

Publisher:CURREN

Chapter10: Reconstitution Of Powdered Drugs

Section: Chapter Questions

Problem 42SST

See similar textbooks

Similar questions

The Ksp values of silver chromate Ag2CrO4 and silver iodate Ag(IO3) are given below. Ag2CrO4 Ag(IO3) Ksp 1.12 x 10-12 3.17 x 10-8 Based on these Ksp values, which of the following is true? Choose one option only. Options: a. In the solution consisting of 1.00 x10-4 M Ag+ and 5.00 x10-5 M CrO42-, Ag2CrO4 precipitate will form. b. In the solution consisting of 1.0 x10-4 M Ag+ and 1.0 x10-4 M IO3-, Ag(IO3) precipitate will form. c. In pure water, the solubility of Ag2CrO4 is lower than the solubility of Ag(IO3). d. In the solution consisting of 0.200 M CrO42- and 0.200 M IO3-, Ag2(CrO4) will precipitate first if we add Ag+ ions gradually into the above mixture.
The main constituents in vinegar are water and ethanoic acid (CH3COOH). In order to determine the concentration of acid in homemade vinegar, a student titrated 25 cm3 of 001 M NaOH against the vinegar. The equation for the reaction is: CH3COOH(aq) + NaOH(aq) ® CH3COONa(aq) + H2O(l) The following titration results were obtained: Burette readings (cm3) Rough 1 2 Final burette reading 20.10 38.90 31.40 Initial burette reading 0.10 20.00 12.50 Volume of vinegar used 20.00 18.90 18.90 (a) What volume of vinegar should be used in the calculation? (b) What is the mole ratio of NaOH:CH3COOH? (c) Calculate the number of moles of alkali in 25 cm3 of NaOH solution used. (d) How many moles of acid were used in the titration? (e) Calculate the…
What volume of 2mg/mL BSA stock is needed to make 40uL of 100ug/mL BSA? Group of answer choices A) 2000uL b) 38uL c) 2uL D) 5uL E) 0.8uL
What volume of 0.10NH2 SO3 will be required to neutralize a solution containing 10.0grams of Ca(OH)2?a) 0.27Lb) 27Lc) 2.7Ld) 270L What volume of 1.5N NaOH is needed to react with 25ml 4.0N HCl?a) 66.67mlb) 6.67mlc) 50mld) 70ml
BSA Concentration (ug/mL) Abs 2000 2.25 1500 1.715 1000 0.915 750 1.156 500 0.714 250 0.082 125 0.086 25 0.082 Create a BSA standard curve Abs562=f[BSA] using a Scatter Plot representation in Excel.
You have a 6 M solution of stock A. You do the following serial dilutions: Add 1 ml of stock A to tube B. Add 9 ml H2O. Mix.Then take 1 ml from tube B and put it into tube C. Add 19 ml H2O. Mix. Then put 5 ml from tube C into tube D. Add 5 ml H2O. A. what is the final (cumulative) dilution of stock A (dilution factor)? B. What is the final concentration (include units) after all these dilutions?
A chromatographic separation of four compounds gave the following results. The dead time (tm) is 16.7 sec. (a) What is the capacity factor for analyte 4? (b) What is the resolution factor for analytes 3 and 4?
Describe the preparation of the following solutions include all mathematic calculations and equipment of the laboratory needed A.500 mm of a solution of KNO 1.50 M B. 150 g of a solution 5.0% of NaC2H3O2 C. 500 mm of a solution of NaOH 0.50 M from a solution of NaOH 6.0 M
if the absorbance of pure chlorophyll a in a 1 cm cell is 0.876 at 530 nm and the concentration is 8.66 x 10^-6 M, what is the molar extinction coefficient of chlorophyll a?
You want 235mL of a solution that consists of 10% BSA, 2.37mM KCl and 120µM EDTA. You have stock solutions of 20% BSA, 1.5M KCl and 200mM EDTA. What volumes of BSA, KCl, EDTA and water would you require to make up this solution? MW of KCl is 75.55. MW of EDTA is 292.24, MW of BSA is 66463)
The iodine contained in every one mL of the 0.010 M iodine solution in the buret will react with 1.76 mg of vitamin C. (In other words, every mL of iodine solution needed for the titration indicates the presence of 1.76 mg of vitamin C in the juice sample.) If your titration used 7.11 mL of iodine solution, what mass of vitamin C is in your fruit juice sample (in milligrams, mg)? Include the unit and two decimal places in your answer.
An analysis of city drinking water for total hardness was done by two students in the laboratory and produced the following results (in ppm CaCO3): Student A: 228.3, 226.4, 226.9, 227.1, and 228.6. Student B: 229.5, 226.1, 230.7, 223.8, and 227.5 1. Calculate the following for each data set: (proper significant figures, neglect units) a) Mean for student A b) Mean for student B c) Relative standard deviation for student A d) Relative standard deviation for student B e) Confidence Level for Student A at 95% (write as a range for example: 200-300) f) Confidence Level for Student B at 95% (write as a range for example: 200-300) g) Which of the student have a more precise result? (write STUDENT A or STUDENT B)

Recommended textbooks for you

Curren'S Math For Meds: Dosages & Sol

Nursing

ISBN:

9781305143531

Author:

CURREN

Publisher:

Cengage

Principles Of Pharmacology Med Assist

Biology

ISBN:

9781337512442

Author:

RICE

Publisher:

Cengage

Biomedical Instrumentation Systems

Chemistry

ISBN:

9781133478294

Author:

Chatterjee

Publisher:

Cengage

Curren'S Math For Meds: Dosages & Sol

Nursing

ISBN:

9781305143531

Author:

CURREN

Publisher:

Cengage

Principles Of Pharmacology Med Assist

Biology

ISBN:

9781337512442

Author:

RICE

Publisher:

Cengage

Biomedical Instrumentation Systems

Chemistry

ISBN:

9781133478294

Author:

Chatterjee

Publisher:

Cengage

Principles Of Radiographic Imaging: An Art And A …

Health & Nutrition

ISBN:

9781337711067

Author:

Richard R. Carlton, Arlene M. Adler, Vesna Balac

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS