D1B54B5B-04C6-41BD-A4A1-B6B723AD3CD4

Concentration Fe(SCN)2+ (M) Absorbance 0.0001 0.386 0.0002 0.774 0.0003 1.154 0.0004 1.527 0.0005 1.931 Question 2 Analysis Section 1 1. Open a spreadsheet program, like Excel or Desmos, and plot your data points, with Absorbance on the y-axis and Concentration on the x-axis. 2. Fit a linear trendline and make sure the equation is labeled on your graph, including the R² value. 3. Fill in your equation below. Absorbance = -Concentration + The slope of your equation gives you the s-1 in the Beer's law equation: A = scl. Since I = 1 cm, the slope is equal to the ɛ of Fe(SCN)2+. The units of & are 1/(M*cm).

(b=1.00 cm). The absorbance of the solution at 427 nm is 0.20. If the molar absorptivity of yellow dye at 427 nm is 27400 Mcm, what is the concentration of the solution in M? Type answer: ere to search 49°F Partly sunny

The absorbance values at 250nm of 5 standard solutions, and sample solution of a drug are given below: Conc. (ug/ml)          A 250 nm10                                0.16820.                               0.32930                                0.50840.                               0.66050                                0.846Sample.                      0.661Calculate the concentration of the sample

Please don't use Ai solution

Find the Concentration for a sample a, B, and C

LabQuest 17 DATA TABLE Trial 1 2 3 4 5 6 Concentration (mol/L) 0.080 0.16 0.24 0.32 0.40 Unknown number Absorbance (no units) 0.2711 0.437 1.480 1.932 2.171 0.3 DATA ANALYSIS 1. Describe an alternate method for determining the molar concentration of your unknown sample of copper (II) sulfate solution, using the standard data.

Hero expert bro Hand written solution is not allowed.

Based on the data, calculate the concentration of analyte in the ORIGINAL sample in ppm. Report to 1 decimal place Sample: A 10.00 mL aliquot of the unknown was placed in a 100.0 mL volumetric flask and made up to the mark will distilled water. The absorbance of this solution is 0.185. Sample + Spike: A 10.00 mL aliquot of the unknown and a 13.00 mL aliquot of the 46.00 ppm stock were both placed in the same 100.0 mL volumetric flask and diluted to the mark with water. The absorbance of this solution is 0.326.   ( Please type answer note write by hend)

Tube #: 2 3 4 mL 0.0120 M Pb(NO,), 5.00 5.00 5.00 5.00 2.00 3.00 4.00 5.00 mL 0.0300 M KI mL 0.20 M KNO, 3.00 2.00 1.00 0.00 Total vol. (mL) 10.00 10.00 10.00 10.00 Absorbance of soln. 0.381 0.420 0.470 0.542 [I] at equilibrium (M)

find the true concentration of Fe²+ of the original sample. A) 5.12 ppm B) 2.56 ppm C) 5.05 ppm D) 2.52 ppm

You would like to calculate the concentration of a protein in a solution measured in a 96 well plate. You have the following information vo in well = 200 μL. pathlength=6 mm, 25000 M1 cm1, Absorbance-2.40. Choose the most correct answer Selected Answer: d. 0.16 mM

A solution of a specific vitamin has a 4max of 271 nm and a concentration of 2.73 x 10-"M. The absorbance of the solution at 271 nm is A = 0.155. What is the molar absorptivity of the vitamin at 271 nm? A sample path length is 1.00 cm. molar absorptivity: L mol-'cm-!

Calculate the number of replicate analyses

I need to find the concentration of dye in sports drink  y=mx can also be A=elc

26. You are provided with a stock solution - 2 mg/ml BSA, calculate and fill in the blanks in the table below for preparation of the solutions (final volume is 1 mL); and draw a standard curve. Final concentration of BSA BSA stock (uL) Buffer (ul) Absorbance (mg/ml) (540 nm) in protein assay 2 1.5 1 1.1 0.75 0.7 0.5 0.3 0.25 0.1

1. Data & Results 4.0 mglmL Concentration of stock solution (include units): Table 1-Beer's Law Plot Data V Volume of standard solution dispensed (mL) M, Diluted concentration (include units) Sample Absorbance A 2.00 mL 0.084 4.00 mL 0.173 l6.00 mL 0.259 8.00 mL 0.340 E 10.00 mL 0.418 Equation of trendline from Beer's Law plot: whats the diluted concentration and equation of trendline from the beers law plot once created?

URGENT PLEASE ANSWER CORRECTLY THANK YOU

Please help me find the concentration of each standard solution in the v-flask, and prepare a curve.     The solution was diluted with ddH2O.

A calibration plot of absorbance vs concentration (ppm) was obatined with standard known Red 40 dye solution. - the slope of the best-fit straight line of the plot is 0.057 ppm^-1 - The absorbance of the dilute unknown sports drink was 0.88 What is the concentration of this dilute unknown sports drink?______   the answer is 15.4 ppm ( can you please show me how to calculate this problem)

Helppp, thanj uuu!!

This is a Biochemistry lab question. For the lab we are spectrophotometrically determining the pka of PNP based on different pHs. I have a sigmoid graph of the absborances of PNP at different pHs at 400 nm. I have pH on the x-axis and absorbance on the y-axis. How do a calculate the pka based off of this graph?

How do I find Concentration? flask Calculate solution Concentration (M) Volume stock of 0.40 M CuSO4 (ml) Volume of flask (ml) Absorbance at 635 nm(a.u.) 1   2.0 10 .185 2   4.0 10 .362 3   6.0 10 .510 4   8.0 10 .674 5   10.0 10 .843

You have a solution with a concentration of 0.80 mM, and you put it in a cuvette with a 1.0cm pathlength.  You read an absorbance of 0.400.  What is the extinction coefficient of your analyte?   Question 4 options:   0.50 mmole/L/cm   0.50 mmol/L (cm)-1   0.50 L/mmole/cm   0.50 mM cm

Just need a second pair of eyes to confirm whether or not my solution is correct. Thanks

45.0 mL of an unknown FeCl3 solution is diluted to a total volume of 230.0 mL. The diluted FeCl3 solution measured an absorbance of 0.223. Calculate the molarity of the undiluted unknown FeCl3 solution if the molar extinction coefficient is 230.0 M-1⋅cm-1 and a path length of 1.00 cm. Group of answer choices 0.000190 M 0.00496 M 0.00593 M 10.0 M 0.00399 M

Using this set of data, what should the trendline of my graph look like?