Choose the best answer: if a spectrometer will be used to measure absorbance in the ultraviolet...
Choose the best answer: if a spectrometer will be used to measure absorbance in the ultraviolet region of the spectrum, the best choice for a source would be a:
A. deuterium lamp
B. quartz cuvette
C. glass cuvette
D. photomultiplier tube
E. tungsten lamp
F. globar source
G. vacuum photodiode
H. prism
Homework Answers
Answer: A. deuterium lamp
Spectrophotometers usually contain two light sources: a deuterium lamp, which emits light in the UV region (ultraviolet region, 190–400 nm) and a tungsten–halogen lamp for the visible region.
Hope this helped you!
Thank You So Much! Please Rate this answer as you wish.("Thumbs Up")
Add Answer to:
Choose the best answer: if a spectrometer will be used to
measure absorbance in the ultraviolet...
7. The Absorption Spectrum of Cobalt(II) Chloride Procedure Getting Started 1. Your laboratory instructor may ask...
7. The Absorption Spectrum of Cobalt(II) Chloride Procedure Getting Started 1. Your laboratory instructor may ask that you work in groups rather than alone. 2. Obtain directions from your laboratory instructor for discarding the solutions that you will use in'! this experiment. 3. Obtain instructions for using your spectrophotometer. 4. Obtain your unknown. Making the Measurements 1. Mark each of 7 dry 18 x 150-mm test tubes with one of a series of identification numbers running from 1 to 7....
I am stuck on how to find concentration for standards and unknowns. Any kind of help would be appreciated. The correct...
I am stuck on how to find concentration for standards and
unknowns. Any kind of help would be appreciated.
The corrected absorbance is = Blank - absorbance
1. Prepare the BCA working reagent. Use a graduated cylinder and add 30 ml of the BCA reagent into a 50 ml Erlenmeyer flask. Use the appropriate micropipette to add 600 uL of the CuSO4 solution into the flask and mix by swirling the flask. Record the exact mass of albumin and the...
How do I make a line of best fit (regression) with the following data? I am...
How do I make a line of best fit (regression) with the
following data? I am aware of how to make it in Microsoft Excel,
but I am having trouble figuring out how to find my x value for
making the graph. Y value is absorbance, what do I use for x value
to calculate the slope?
Tube 0.5 mM sulfide standard (ml) Sulfide amount (umol) Sulfide reagent (ml) 0.0 4.9 0.11 0.00 0.2 FeCl3 dH2O to Absorbance 10ml total...
IODOMETRIC TITRATION P Matching: Choose the best answer (10 points) 1. The water used to prepare...
IODOMETRIC TITRATION P Matching: Choose the best answer (10 points) 1. The water used to prepare the thiosulfate solution must be 2. E is added to the thiosulfate solution to bring up pH value to 9. 3. The thiosulfate solution must be store in 4. A is added to the 10; mixture to make it slightly acidic. 5. Must the above solution me be titrated immediately? B is the primary standard 7. is the mole ratio for the reaction of...
Please Answer the unsolved questions Matching. Choose the BEST match from column B for column A....
Please Answer the unsolved questions
Matching. Choose the BEST match from column B for column A. Responses from column B may be used more than once. Column A Column B 1. Protozoan 2. Treponema palladium 3. . 、Chancre 4.Vaccine available 5. Symptoms: frothy vaginial discharge with fishy odor E. Genital warts 6. Implicated in causing cervical cancer A. Gardnerella vaginalis B. Gonorrhea C. Genital herpes D. Hepatitis B . F. Chlamydia trachomatis G. Syphilis H. Candida albicans I. Trichomonas J....
QUESTION 1 Choose the best match for each term or statement. Some answers may be used...
QUESTION 1 Choose the best match for each term or statement. Some answers may be used more than once. Produces endospores A Clostridium Anaerobic, gram-negative bacteria, with pointed ends. Filamentous bacteria that produce most of our commercial antibiotics. Gram-positive cocci that form grape-like clusters. Gram-positive cocci that form chains and are aerotolerant anaerobes. - Infectious by elementary bodies. Filamentous bacteria, aerobes, cell wall resembles mycobacteria; often stain acid fast Cause of whooping cough Produces a food-poisoning enterotoxin Caused the bubonic...
for this experiment i got a yield of 0.02g. what is the theoretical and percentage yield?...
for this experiment i got a yield of 0.02g. what is the
theoretical and percentage yield?
STUDENT HANDOUT Synthesis of poly(2-methoxy-542-ethylhexyloxy-1.4-phenyle Purpose of the Experiment ylhexyloxy-1.4-phenylenevinylene (MEH-PPV) The purpose of this experiment is 10 bis bromomethyl)-1-methoxy-4-2- experiment is to synthesize a polymer using a Gilch polymerization of 2,5 methyl)-1-methoxy-4-(2-ethylhexyloxybenzene, to investigate the polymer's photophysica properties, and to understand the mechanism of the polymerization reaction Introduction Polyphenylene vinylenes) or PPVs are highly luminescent polymers that are used for a variety of...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...
QUESTIONS TO ANSWER: Prepare a table of all chemicals used with the structure and purpose of...
QUESTIONS TO ANSWER:
Prepare a table of all chemicals used with the structure and
purpose of each.
Calculate the theoretical yield by finding limiting reactant of
the experiment by converting reactants to product (remember to show
all calculations used)
Calculate the percent yield using the limiting reactant
Calculate the Rf for triphenylmethanol. If there are two dots,
determine which one is triphenylmethanol.. ( I did not provide
data. Please let me know how I Would do this if I did)...
phlebotomy 130 Unit in Blood Collection Procedures MATCHING Use choices only once unless otherwise indicated. MATCHING...
phlebotomy
130 Unit in Blood Collection Procedures MATCHING Use choices only once unless otherwise indicated. MATCHING 7-1: KEY TERMS AND DESCRIPTIONS Match each key term with the best description. Key Terms ACD Additive Anticoagulants Antiglycolytic agent Antiseptics Bevel Biocide Blood collection sets Carry-over/cross-contamination Clear/discard tube Descriptions A. Abbreviation for the colle used for routine venipun B. Additive that prevents the by the cells C. Additive used for collecting D. Additive used for immunoh DNA and HLA typing E. Anticoagulant that...
7. The Absorption Spectrum of Cobalt(II) Chloride Procedure Getting Started 1. Your laboratory instructor may ask that you work in groups rather than alone. 2. Obtain directions from your laboratory instructor for discarding the solutions that you will use in'! this experiment. 3. Obtain instructions for using your spectrophotometer. 4. Obtain your unknown. Making the Measurements 1. Mark each of 7 dry 18 x 150-mm test tubes with one of a series of identification numbers running from 1 to 7....
I am stuck on how to find concentration for standards and
unknowns. Any kind of help would be appreciated.
The corrected absorbance is = Blank - absorbance
1. Prepare the BCA working reagent. Use a graduated cylinder and add 30 ml of the BCA reagent into a 50 ml Erlenmeyer flask. Use the appropriate micropipette to add 600 uL of the CuSO4 solution into the flask and mix by swirling the flask. Record the exact mass of albumin and the...
How do I make a line of best fit (regression) with the
following data? I am aware of how to make it in Microsoft Excel,
but I am having trouble figuring out how to find my x value for
making the graph. Y value is absorbance, what do I use for x value
to calculate the slope?
Tube 0.5 mM sulfide standard (ml) Sulfide amount (umol) Sulfide reagent (ml) 0.0 4.9 0.11 0.00 0.2 FeCl3 dH2O to Absorbance 10ml total...
IODOMETRIC TITRATION P Matching: Choose the best answer (10 points) 1. The water used to prepare the thiosulfate solution must be 2. E is added to the thiosulfate solution to bring up pH value to 9. 3. The thiosulfate solution must be store in 4. A is added to the 10; mixture to make it slightly acidic. 5. Must the above solution me be titrated immediately? B is the primary standard 7. is the mole ratio for the reaction of...
Please Answer the unsolved questions
Matching. Choose the BEST match from column B for column A. Responses from column B may be used more than once. Column A Column B 1. Protozoan 2. Treponema palladium 3. . 、Chancre 4.Vaccine available 5. Symptoms: frothy vaginial discharge with fishy odor E. Genital warts 6. Implicated in causing cervical cancer A. Gardnerella vaginalis B. Gonorrhea C. Genital herpes D. Hepatitis B . F. Chlamydia trachomatis G. Syphilis H. Candida albicans I. Trichomonas J....
QUESTION 1 Choose the best match for each term or statement. Some answers may be used more than once. Produces endospores A Clostridium Anaerobic, gram-negative bacteria, with pointed ends. Filamentous bacteria that produce most of our commercial antibiotics. Gram-positive cocci that form grape-like clusters. Gram-positive cocci that form chains and are aerotolerant anaerobes. - Infectious by elementary bodies. Filamentous bacteria, aerobes, cell wall resembles mycobacteria; often stain acid fast Cause of whooping cough Produces a food-poisoning enterotoxin Caused the bubonic...
for this experiment i got a yield of 0.02g. what is the
theoretical and percentage yield?
STUDENT HANDOUT Synthesis of poly(2-methoxy-542-ethylhexyloxy-1.4-phenyle Purpose of the Experiment ylhexyloxy-1.4-phenylenevinylene (MEH-PPV) The purpose of this experiment is 10 bis bromomethyl)-1-methoxy-4-2- experiment is to synthesize a polymer using a Gilch polymerization of 2,5 methyl)-1-methoxy-4-(2-ethylhexyloxybenzene, to investigate the polymer's photophysica properties, and to understand the mechanism of the polymerization reaction Introduction Polyphenylene vinylenes) or PPVs are highly luminescent polymers that are used for a variety of...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...
QUESTIONS TO ANSWER:
Prepare a table of all chemicals used with the structure and
purpose of each.
Calculate the theoretical yield by finding limiting reactant of
the experiment by converting reactants to product (remember to show
all calculations used)
Calculate the percent yield using the limiting reactant
Calculate the Rf for triphenylmethanol. If there are two dots,
determine which one is triphenylmethanol.. ( I did not provide
data. Please let me know how I Would do this if I did)...
phlebotomy
130 Unit in Blood Collection Procedures MATCHING Use choices only once unless otherwise indicated. MATCHING 7-1: KEY TERMS AND DESCRIPTIONS Match each key term with the best description. Key Terms ACD Additive Anticoagulants Antiglycolytic agent Antiseptics Bevel Biocide Blood collection sets Carry-over/cross-contamination Clear/discard tube Descriptions A. Abbreviation for the colle used for routine venipun B. Additive that prevents the by the cells C. Additive used for collecting D. Additive used for immunoh DNA and HLA typing E. Anticoagulant that...
Most questions answered within 3 hours.
-
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 1 hour ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 1 hour ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 1 hour ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 1 hour ago -
Determine the number of formula units of
Na2SO4 and moles of oxygen contained in 8.11
moles...
asked 1 hour ago -
Explain in steps on the following code
What would be the output when executed
using System;...
asked 1 hour ago -
Given the information in the table, which of the following
statements is CORRECT?
Stock A
Stock...
asked 1 hour ago -
Write MARIE assembly language programs that do the following:
Write a program that inputs an integer...
asked 1 hour ago -
Explain an understanding of services and protocols.
Explain the job of DNS.
Explain the three email...
asked 2 hours ago -
(As soon as possible) Balance each of the following equations
according to the half-reaction method:
H2O2(aq)...
asked 2 hours ago -
A thin rod with a mass of 3.5kg and a length L=1.5 m is oriented
horizontally....
asked 2 hours ago -
Inheritance pattern in BRCA 1
Describe the inheritance pattern of BRCA 1 Is it recessive or...
asked 2 hours ago