Sample (μg) Absorbances (520 nm) Concentration 0.0 0.621 0 2.5 0.599 2.5 5.0 0.556 5 10.0 0.469 10 15.0 0.418 15 20.0 0.291 20 Plot a graph in which y axis represents for absorbance and x-axis represents for concentration From graph, y=mx + c

Q: What is the absorbance of a solution with [X] = 4.37 × 10–4 M?   Question 7 options:…

A: As the question lacks any information about the relation or equation between [X] and A, I have…

Q: 400 450 500 550 600 650 700 wavelength (nm) : Wavclength of maximum absorbance for base form ph…

A:

Q: What is the intercept of the linear regression line?

A: Solution:  We know the Beer-Lambert law, which is the relationship between concentration and…

Q: If a solution has a 1max of 500 nm, what is the likely color of the solution? red orange blue green…

A: Solution: We know that color of any compound appearing is the complement color of which is absorbed.…

Q: A solution with a concentration of 0.10 M is measured to have an absorbance of 0.36. Another…

A: Absorbance of 1st solution = A1 = 0.36 Molarity of 1st solution = M1 = 0.10 M absorbance of 2nd…

Q: Calculate the concentration of Cu in the sample by calibration curve using the following data…

A:

Q: Use Beer’s Law to calculate the concentration of a sample of cyanmethaemoglobin if it has an…

A:

Q: A standard curve for a compound was created with a series of standards, and is shown below. If an…

A: To calculate the concentration of unknown, we would use the straight line equation of the plot and…

Q: Table 1 Table 1: " Beaker Moles of SCN Moles of FESCN2+ Concentration Absorbance at of FeSCN2*(M)…

A: We need to write the descriptive titles for the three tables.

Q: In this problem, you will determine the % relative standard deviation (%RSD) from a series of…

A:

Q: The observed color of a solution is green. The Amax of the solution is expected to be in the…

A:

Q: The Ksp value for calcium sulfate [CaSO4] is 2.40 X 10-5 so if a professor made 1825 mL of a…

A: Ksp = [Ca2+][SO42-] if solubility is s mol/L then: Ksp = s2 Number of mol = Molarity x Volume in L…

Q: The following absorbance values for four solutions with known MnO4 concentrations were measured…

A: A spectrophotometer is a device that is used to measure the intensity of the light that passes…

Q: Net Absorbance (595 nm) Which protein standard curve would you use to read off the protein…

A: Option 1 is the correct choice. Determination of concentration of an unknown sample using standard…

Q: What is the molar concentration for a solution with a measured absorbance of 0.212 based on this…

A: According to Beer-Lambert’s law, the absorbance of solution can be expressed as:

Q: What percentage of a 1.5g sample of SrF2 could dissolve in 10.9 liters of water?

A: Percentage dissolved amount of a sparingly soluble salt can be calculated by knowing its molar…

Q: Help with standard deviation

A:

Q: Based on the calibration curve, what is the molar concentration for a solution with a measured…

A:

Q: 1. Fit a straight line to the following data points using excel program to obtain the concentration…

A: Beer's Lambert's law :

Q: If a solution is red in color, what color and approximate wavelength range would it absorb the most?

A:

Q: A solution of a specific vitamin has a Amax of 261 nm and a concentration of 2.38 x 107 M. The…

A: The objective of the question is to determine the molar absorptivity.It is given that,The…

Q: Item 23: Question In its protonated form, bromothymol blue has a molar absorptivity of 13800 M¹cm¹…

A: It states that the decrease in intensity of incident radiation is directly proportional to…

Q: a) Determine the concentration of your prepared Iron (III) Salicylate Dianion solution (pure ASA) in…

A: Beer-Lambert Law, also known as Beer's Law, relates the concentration of a solute in a solution to…

Q: A student used 500mg of tabletop sweetener to make a total of 5ml of solution with biuret reagent.…

A: The student prepared a solution containing 500 mg of tabletop sweetener in a total volume of 5 mL.…

Q: Plot the following data and use the fitted equation for the line to determine the concentration (mM)…

A: Given data Fe(II)SO4 , Concentration,mM Absorbance  0 0 1 0.188 2 0.388 3 0.558 4 0.749…

Q: 4. A light pink, 0.050 M stock solution of cobalt (II) chloride (COCL) is analyzed by…

A: Since you have posted a question with multiple sub-parts, we will solve first three subpartsfor you.…

Q: Write the condensed (noble-gas) electron configuration of Si.

A: The complete electron configuration of elements can be written by filling the electrons into…

Q: Suppose you did the titration three times and got the following data for the concentration of NaOH:…

A: The question is based on the concepts of analytical chemistry. we have to determine the relative…

Q: Following is a table of data showing the absorbance of a solution of cobalt(II)  ion at different…

A: Welcome to bartleby !  We have to calculate the concentration of unknown solution

Q: The slope for the line is 71.22. Use the Beer's Law plot provided to determine the concentration for…

A: Use Beer's law for the calculation of the concentration of the solution.

Q: Two samples were analyzed using a colormeter on a cellphone: one containing only distilled water,…

A:

Q: I need to know: 1. moles FeNCS2+ at equilibrium (10mL) (mol) 2. moles Fe3+, reacted (mol) 3.…

A: Solution: Here first we write the given reaction for the reference.  Fe3+ (aq) + SCN- (aq) ====>…

Q: Help me solve this, please? With the following data, and given the absorbance of the unknown…

A: The concentration (M) of the unknown solution is to be calculated

Q: Part 3: 09 Average absorbance prorhande Flask 8 Flask 9 Flask 10 Flask 11 Part 3: Q Flask 8 Flask 9…

A: Given:   [FeSCN+2] (mol/L) Flask 8 4.59×10-5 Flask 9 5.18×10-5 Flask 10 6.64×10-5 Flask…

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.