Exercise: A calibration curve is obtained by measuring the florescence intensities of a series of standards. The following data are obtained Concentration (ppm) Florescence intensity 0.00 0.10 0.20 0.40 0.80 0.00 5.80 12.20 22.30 43.30 Plot the florescence vs. concentration according to plotting guideline. Obtain the best-fit straight line. Q1) What is the value of R2? a.0.99398 b.0.99893 c.0.99983 d.0.99839 e.0.99894 Q2) Calculate the concentration of an unknown sample that has fluorescence intensity of 18.5 a.0.32123 b.0.33300 c.0.32621 d.0.33312 e. 0.33316

Exercise: A calibration curve is obtained by measuring the florescence intensities of a series of standards. The following data are obtained Concentration (ppm) Florescence intensity 0.00 0.10 0.20 0.40 0.80 0.00 5.80 12.20 22.30 43.30 Plot the florescence vs. concentration according to plotting guideline. Obtain the best-fit straight line. Q1) What is the value of R2? a.0.99398 b.0.99893 c.0.99983 d.0.99839 e.0.99894 Q2) Calculate the concentration of an unknown sample that has fluorescence intensity of 18.5 a.0.32123 b.0.33300 c.0.32621 d.0.33312 e. 0.33316

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions

Section: Chapter Questions

Problem 77PS

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AutoSave We hw OFF ... Home Insert Draw Design Layout References Mailings Review View O Tell me R Share O Comments Calibri (Bo.. v 11 v A A Aa v AaBbCcD AaBbCcDdE AaBb AaBbCcDdEe AaBbCcDdEe Paste BIU V ab x, x A . I v A v No Spacing Heading 1 Normal Heading 2 Title Styles Pane Dictate Sensitivity 9) Why do the peaks of associated with aldehydes (both in H NMR and C13 NMR) appear so much further downfield than other peaks? H NMR Peaks Sat. alkanes R-H Aromatics R,C=CH2 Ethers Sulfides RO-CH RS-CH RCH=CHR Alcohols HO-CHH RC=CH PhO-CHH APCH H RC=CR-CH F-CH Cl-CH, I-CH, Br-CH RCH Esters RCO, CH NC-CH O,N-CH - H RN-CH RCO,H Amide RCONH ROH PHOH RNH 1.0 0.0 ppm ( 12.0 11.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 Page 4 of 5 268 words English (United States) 3 Focus 白

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