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
kogti [31]
3 years ago
13

A possible reaction for the degradation of the pesticide DDT to a less harmful compound was simulated in the laboratory. The rea

ction was found to be first-order, with at . What is the half-life for the degradation of DDT in this experiment, in years?
Biology
1 answer:
Bas_tet [7]3 years ago
8 0

Answer:

This exercise is incomplete, missing the value of k (decay constant), which is equal to 4x10⁻⁸s⁻¹ at 25°C

The answer is 0.549 years

Explanation:

Given:

first order of reaction

k = 4x10⁻⁸s⁻¹

For a first order of reaction, the half-life time for the degradation of DDT is equal to:

t=\frac{0.693}{k} =\frac{0.693}{4x10^{-8} } =17325000s=0.549years

You might be interested in
Dietary fiber has been recommended for its possible benefits in reducing heart disease by lowering blood cholesterol. How does f
malfutka [58]

Answer:

By lowering the levels of total cholesterol and low density lipoprotein (LDL)

Explanation:

Dietary fibers are classified into two: the soluble fiber and the insoluble fiber. Studies have show that the soluble fiber play a significant role in lowering blood cholesterol, hence reducing the cardiovascular diseases.

Soluble fiber helps to lower blood cholesterol by its ability to bind to the small intestine which further binds to cholesterol most especially the ad cholesterol (low density lipoprotein). Binding of Fibers to cholesterol prevents them from migrating to the blood stream and to other  parts of the body. Since cholesterol can't get into the bloodstream, it exits the body through feces. Fiber has more effect on lowering LDL (bad cholesterol) than High density lipoprotein (good cholesterol.

5 0
3 years ago
Which of the following statements is true?
maxonik [38]
I think the third is correct
...
5 0
3 years ago
Read 2 more answers
How does the orientation of the earths axis relate to the position of the sun and sky
OLEGan [10]
Im guessing because earths axis is tilted 23 degrees, the sun rises in the North and sets in the south. Hope this helped.
5 0
3 years ago
Photo attached. 10 points! Thanks in advance
Alex
The answer is C, the opposite
8 0
3 years ago
Match each term to the example that describes it.
Sauron [17]
Genetic diversity - a population of a spider species...
keystone species - sea otters eat sea urchins...
species diversity - researchers in the amazon...
ecosystem diversity - three populations of insects...
got these ALL right on edmentum‼️
5 0
3 years ago
Other questions:
  • In people suffering from _____, chronic excessive worry is accompanied by three or more of the following symptoms: restlessness,
    7·1 answer
  • You have been asked to lead a research team to observe gorillas in their natural environment, collect DNA samples, and analyze h
    10·1 answer
  • If you wanted a horse to foal in January when would you breed
    12·1 answer
  • What is the temperature of the middle most layer of the Sun's atmosphere?
    9·1 answer
  • ¿Cuáles son los derechos que defiende el Fondo De Las Naciones Unidas Para La Infancia?
    8·1 answer
  • Which of the following questions would BEST
    6·1 answer
  • What are the abiotic factors that could affect a population? ​
    12·1 answer
  • PLEASE HELP AND THANK YOUU!!
    11·1 answer
  • HELP!!!! 50PTS!!!!!
    5·1 answer
  • What type of bond connects the adjacent nucleotides of a dna strand?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!