- If This Item Does Not Open Automatically You Can Open Exp 8 Intro Procedure Questions Here 7 Questions 1 What Is The 1 (35.88 KiB) Viewed 37 times
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If this item does not open automatically you can open Exp 8- Intro/Procedure/Questions here the two results are significantly different or not. If the error bars don't overlap, can you think of any reasons why? Experimental error can come from many sources, not just from the final measurements themselves. 2) Consult Chapter 20 in the text. Hollow cathode source lamps are used to produce the radiation absorbed in the AA experiment. These lamps produce many wavelengths characteristic of the element present in the lamp, which is the same element as the analyte. Different lamps are used for different elements. Different wavelengths can be chosen, but only one wavelength actually passes through the flame and analyte because Beer's law only applies for monochromatic radiation. How is only one wavelength passed through the flame for measurement? 3) An acetylene-air flame was used with the AA. Bunsen burners use natural gas (with air). Do an internet search and find the temperatures at which acetylene and natural gas burn in air. Why do you think acetylene is used and not natural gas? Operating Instructions for the Perkin-Elmer AAnalyst 200 flame-AAS:
Chem 3200-Experiment 3A-Sample Report.docx Recovered Compatibility Mode Malings ences View Layout Tell me Review Table Design - Ap EEN 4 A ABCD A Te A- CHEM 3200: The Determination of Lead in Brass by Atomic Absorption Spectrometry. 1. Data & Results Mean Standard D 0 0 0.0009 0.005 0.0002 0.030 0.0004 0.075 0.0004 0.346 0.0004 8.005 0.1419 0.0505 AL 1 2 S E 10 Sample Sangle 1 Mass of sample NA Ro 24 BH wy AL SER IM *M *Data Paints P $ 4 R 20 F an at % 5 201 P T Beaker 03015 Sample 1 487268 Concentration vs Absorbance C G ^ 6 W F Y - & e7 H 7 00 U Besker 2 € 1050 g Sample 4.7502 000000 00. 8 J ba ** 1 ( 9 K 30 gt O
ut Res Mallings Revie View Table Design A A+ A E. SAF M $ 4 WAGO N.Qutions C3200-Experiment 34-Sample Report.doc Recovered Compty Mode Sample Catal 0ppm 53.14ppa 5.10 25ml Din fact-625 PERH Gas -1913. PREEWATE TWEE www.ww HEEFLIND THE www R F 5 109 IN % 9 T G -10 04056 ppm- 49.457 m 1015 4mL 054-0.0005 x 10000532 M A M. Y -2125642512 ppm M HIN 53.14ppmx 1000 ml -212560 ppm 25 00487100-48726 49.457 winters H ARGE AACD nos A & 7 44 ww U Fox" n -0.0870 <.00 8 D - 69 K O C -0 O L