Molar absorptivity - Study guides, Class notes & Summaries
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MMSC407 Exam 1 Questions with All Correct Answers
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MMSC407 Exam 1 Questions with All 
Correct Answers 
 
what type of light a Tungsden (Quartz-Vapor) exciter lamp shows us - Answer-visible 
light 
what type of light a Hydrogen/ Deuterium exciter lamp shows us - Answer-UV light 
what type of light a Xenon/MercuryVapor exciter lamp shows us - Answer-UV light 
visible light range - Answer-350-700 nm 
color absorbed at 350-430 nm - Answer-violet 
color absorbed at 430-475 nm - Answer-blue 
color absorbed at 475-495 nm - Answer-blue-green 
color abso...
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Analytical Principles Question and answers 100% correct
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Analytical Principles Question and answers 100% correct Analytical Principles - CSMLS 
 
What is the relationship between absorbance and transmittance? - correct answer A = 2-log %T 
 
How is transmittance defined? - correct answer the amount of light allowed to pass through a solution, which is expressed as the intensity of the light beam after it has passed through solution (I) divided by the intensity of the incident beam (Io) 
T = I/Io 
 
What is Beer's law? - correct answer absorbanc...
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MB (ASCP) Review & Exam Questions Part II solved 2024
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MB (ASCP) Review & Exam Questions Part II solved 2024 
What is the Beer-Lambert Law? 
 
the linear relationship between absorbance and concentration of an absorbing species. 
 
 
What is the Beer-Lambert Law equation? 
 
A = ebc 
 
A: absorbance 
e: molar absorptivity 
c: concentration 
b: path length 
 
 
 
DNA and RNA are absorbed at: 
 
260nm
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Chem 241 Lab Final Exam Questions And Answers Latest Update 2024
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the importance of TMS (CH3)4Si - correct answers -TMS is extremely shielded (more so than most organics) 
-1 sharp spike at 0, due to 12 equivalent protons 
-chem. Inert 
-low BP, easily removed 
 
Beer's Law - correct answers A=abc 
A=absorbance 
a=molar absorptivity 
b=path length 
c=concentration 
know how to find c= 
if λ=max then a is constant 
if a standardized cuvette is used b is constant 
if A, b, and a are known, then c can be calculated, but only if all those criteria are met! 
(A ...
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Chem 104 Binghamton University Questions With 100% Correct Answers.
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1 cm^3= ? mL - 1 mL 
1 in = ? cm - 2.54 cm 
1 kg= ? lbs - 2.2046 lbs 
1 km = ? mi - 0.62137 mi 
1 mi = ? ft - 5280 ft 
1 mi = ? km - 1.6093 km 
Accerleration Derived Unit - m/s^2 
Accuracy - refers to how close a measured value is to an accepted value 
acetate - C2H3O2- 
Acetates and Nitrates are soluble - C2H3O2-,NO3- Exceptions: None 
Acids - proton (H+) donors 
Ammonium - NH4+ 
Amount SI Base Unit - Mole (mol)Anions - negatively charged ions (gain e-)(nonmetals) 
Area Derived Unit - m^2 
Avag...
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CHEM 209 Quiz 2 Latest Update Graded A+
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CHEM 209 Quiz 2 Latest Update Graded 
 
A+ 
 
Question: What is the chemical equation representing the reaction between Fe3+ and 
thiocyanate? 
 
- a. SCN-(aq) + Fe3+(aq) = Fe(SCN)2+(aq) 
- b. Fe3+(aq) + SCN-(aq) = Fe(SCN)2+(aq) 
- c. Fe(SCN)2+(aq) = SCN-(aq) + Fe3+(aq) 
- d. Fe(SCN)2+(aq) = Fe3+(aq) + SCN-(aq) 
- Answer: b. Fe3+(aq) + SCN-(aq) = Fe(SCN)2+(aq) 
 
Explanation: This equation shows the formation of the complex ion Fe(SCN)2+ from Fe3+ and 
thiocyanate ions. 
 
Question: Provide the...
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Chemistry 107 - Binghamton University - Chapter 4 Study Set 2024 Graded A
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Solution - homogenous mixture of 2 or more substances 
 
Solute - What is being dissolved 
 
Solvent - What is doing the dissolving 
 
Saturated - The solution is at the maximum amount of solute 
 
Supersaturated - There is more solute dissolved than usually allowed because of a change in the pressure or temperature during dissolution 
 
Unsaturated - The solution does not have the maximum amount of solute for its volume of solvent 
 
ppm (parts per million) - grams of solute/ grams of solution ...
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Chemistry 107 - Binghamton University - Chapter 4 Study Set Questions & Answers Already Graded A+
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A1/C1 = A2/C2 - absorbance of solution 1 divided by concentration 1 is equal to the absorbance of 
solution 2 divided by concentration of solution 2 
Amphiprotic - Can either accept or donate a proton, water is amphiprotic, can turn into H30+ or 
OHBeers Law - Absorbance = molar absorptivity x path length x concentration of absorber 
Br and Cl have a ___ O.N unless paired with which 2 elements? - -1 O.N, unless paired with 
Oxygen or Fluorine 
Bronsted-Lowry acid - proton donor 
Bronsted-Lowry b...
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CHEM 241 Spectroscopy Exam Study Guide Correct Answers Latest Update
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How do transmittance, absorbance, and molar absorptivity differ? Which one is proportional to concentration? - correct answers *transmittance* = (P/P0) 
 
*absorbance* = log(T) 
 
absorbance is proportional to concentration 
 
Why is it most accurate to measure absorbances in the range A = 0.3-2? - correct answers If absorbance is too high, too little light reaches the detector for accurate measurement 
 
If absorbance is too low, there is too little difference between sample and reference for a...
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MMSC 407 Final Exam (A+ Graded Already)
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light correct answers an energy source that can be characterized in terms of wavelength, amplitude and frequency 
-the visible spectrum 
 
wavelength correct answers the distance between waves 
 
amplitude correct answers the height of a wave 
 
frequency correct answers how many waves pass in one second (related to speed) 
 
high energy waves correct answers high frequency, very short and compact wavelengths 
-e.g. violet 
 
low energy waves correct answers low frequency, long wavelengths 
-e.g...
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