1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
NNADVOKAT [17]
3 years ago
7

A researcher was attempting to quantify the amount of ddt (dichlorodiphenyltrichloroethane) in spinach using gas chromatography

mass spectrometry (gcms). first attempts using external calibration proved difficult, as reproducibility and external standard agreement were poor. to overcome these problems, the researcher used the internal standard calibration method with chloroform as the internal standard. to begin, the researcher analyzed a sample containing 6.44 mg/l ddt standard and 1.41 mg/l chloroform as the internal standard, which produced peak areas of 3979 and 9257 for the ddt and chloroform, respectively.
a. determine the response factor (f).
Biology
1 answer:
Butoxors [25]3 years ago
4 0

Answer

Given data

                   Conc. of standard ddt = 6.44mg/l

                   Conc. of Internal standard chloroform = 1.41mg/l

                   Peak of standard ddt = 3979

                   Peak of internal standard chloroform = 9257

Required

              Response factor (RF) = ?

Solution

               As we know that  

               Response factor (RF) = Peak area/sample amount

So RF for standard ddt

                                  RF = 3979/6.44 = 617.85  (answer)

RF for internal standard chloroform

                                RF = 9257/ 1.41= 6565.24 (answer)


You might be interested in
Which of the following would not be a basis for misrepresentation? a. These shrubs will survive in direct sunlight. b. This lawn
Amiraneli [1.4K]

Answer:

i believe your answer is d.

3 0
3 years ago
Why is photosynthesis so important to life on Earth
Readme [11.4K]
It's legit how plants live. Sun feeds plants, plants feed animals/us, animals feed animals/us, everything living works better when it eats
7 0
3 years ago
Read 2 more answers
Natural selection changes allele frequencies because some __________ survive and reproduce better than others.
Ratling [72]

Answer:

individuals

Explanation:

.

5 0
2 years ago
Why and/or how are invasive species of plants introduced to new foreign areas?
Simora [160]
Some ways that plants are transported around include seeds, insects, people, and animals. 


6 0
3 years ago
Which two kingdoms consist only of cells without nuclei?
Stolb23 [73]
D - Eubacteria and Archaebacteria
3 0
3 years ago
Other questions:
  • Oil, natural gas, and coal are considered to be nonrenewable resources. Why are these fuels considered to be nonrenewable?
    5·1 answer
  • Okay for this..it has 2 questions so please answer them and hopefully give the correct answer! Thank you
    9·2 answers
  • Help what number is it
    5·1 answer
  • Pea plant clones are given different amounts of water for a three week period.
    7·1 answer
  • Which of the following shapes is most similar to Earth’s orbit?
    11·1 answer
  • Viruses have many things in common with living organisms, but they are NOT actually considered living. Why?
    7·1 answer
  • Which of these was the world’s first artificial satellite?
    11·2 answers
  • A currently popular diet is the Keto Diet in which followers attempt to eat a diet high in protein and fats (lipids), and low in
    14·1 answer
  • 1.______ from the sun is transferred to_____ surface. some of that energy is then _____
    6·1 answer
  • What is the equation for a photosynthesis???????????????​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!