2. Plot the following data as absorbance vs concentration of X in excel Absorbance, A Molar Concentrationof X 0.045 3.0x 10-4 mol/L 0.097 6.2x 10-4mol/L 0.14 9.0 x 10-4 mol/L 0.35 2.2x 10-3mol/L 0.51 3.2x 10-3mol/L When plotting in excel make sure that ( in EXCEL, not hand written ) you label each axis and place a title that includes your name ( Mahmoud ) . Perform linear regression on the data. Use the graph to answer the following questions. a.What is equation of the line for this graph and what is its R2 value? b.What is the Molar concentration of X when its absorbance is 0.23? c.A 5.0x 10-3 M solution would have an absorbance of? d.What would be the absorbance if the pathlength in question 3 was doubled?
2. Plot the following data as absorbance vs concentration of X in excel Absorbance, A Molar Concentrationof X 0.045 3.0x 10-4 mol/L 0.097 6.2x 10-4mol/L 0.14 9.0 x 10-4 mol/L 0.35 2.2x 10-3mol/L 0.51 3.2x 10-3mol/L When plotting in excel make sure that ( in EXCEL, not hand written ) you label each axis and place a title that includes your name ( Mahmoud ) . Perform linear regression on the data. Use the graph to answer the following questions. a.What is equation of the line for this graph and what is its R2 value? b.What is the Molar concentration of X when its absorbance is 0.23? c.A 5.0x 10-3 M solution would have an absorbance of? d.What would be the absorbance if the pathlength in question 3 was doubled?
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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2.
Plot the following data as absorbance vs concentration of X in excel
Absorbance, A Molar Concentrationof X
0.045 3.0x 10-4 mol/L
0.097 6.2x 10-4mol/L
0.14 9.0 x 10-4 mol/L
0.35 2.2x 10-3mol/L
0.51 3.2x 10-3mol/L
When plotting in excel make sure that ( in EXCEL, not hand written ) you label each axis and place a title that includes your name ( Mahmoud ) . Perform linear regression on the data.
Use the graph
to answer the following questions.
a.What is equation of the line for this graph and what is its R2 value?
b.What is the Molar concentration of X when its absorbance is 0.23?
c.A 5.0x 10-3 M solution would have an absorbance of?
d.What would be the absorbance if the pathlength in question 3 was doubled?
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.![em1.png Part 3: Q9 Average absorbance Flask 8 Flask 9 Flask 10 1:1 Ratio so, Flask 11 Part 3: Q Flask 8 Flask 9 Flask 10 Flask 11 Part 3: Q10 Flask 8 Flask 9 Flask 10 Flask 11 Part 3 0.146 0.166 [Fe] -0.002mol/L 0.215 0.294 [FESCN³mol/L) 4.59% 10 5.18*10* 6.64*10* 9.08*10* [FXmol/L) 5.00 *10* 5.00*10* Y=3362x-0.0083 R² = 0.9993 5.00*10* 5.00*10* (Amounts of flask 8 (9 - 11's values are in the spreadsheet) 71% volume 5.00mL Molarity of Fe(NO3))3 = 0.2M Volume of Fe(NO3))3 = 5.00mL Moles of Fe³= Molarity x volume(L) Moles of Fe¹ = 0.2M X 0.005L = 1x10-³mole x [SCN][mol/ 4x10 5×10-4 7x10 1×10 1 Concentration of Fe³ = mole of Fe³ Volume mole of Fe³1x10³ mole G.O05L 8, Average absorbance for solution 8 (same for 9 - 11) Average absorbance for flask 8 = sum of all absorbances / number of readings (0.145 +0.147 +0.148) 3 Using equation of calibration curve's line(slope) of best fit, the average absorbances of the unknown concentrations to determine [FeSCN-Jat equilibrium in solution 8:…](/questions-and-answers/em1.png-...-part-3-q-average-absorbance-flask-and-11-ratio-so-flash-d-flask-10-flask-11-part-3-q-fla/c9657571-599f-4ed4-a5e6-fabcbd26b888){kind=link}
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