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
Tanya [424]
3 years ago
5

At 25 °C the rate constant for the first-order decomposition of a pesticide solution is 6.40 x 10-3 min-1. If the starting conce

ntration of pesticide is 0.0314 M, what concentration will remain after 62.0 min?
Biology
1 answer:
Svet_ta [14]3 years ago
3 0

Answer:

0.0211 M concentration of pesticide will remain after 62.0 min.

Explanation:

Initial concentration of the pesticide = [A_o]=0.0314 M

Final concentration of the pesticide after t time = [A]=?

t = 62.0 minutes

Rate constant of the reaction = k = 6.40\times 10^{-3} min^{-1}

For the first order kinetics:

[A]=[A]_o\times e^{-kt}

[A]=0.0314 M\times e^{-6.40\times 10^{-3} min^{-1}\times 62.0 min}

[A]=0.0211 M

0.0211 M concentration of pesticide will remain after 62.0 min.

You might be interested in
What agents of erosion are assisted by the force of gravity
Nady [450]

I would say that wind is the top agent of erosion that is assisted by gravity because gravity pulls down the sediments that the wind is eroding.

5 0
2 years ago
Animals and plants need to maintain homeostasis to function properly. True False
Debora [2.8K]
<span>Animals and plants need to maintain homeostasis to function properly. is True</span>
3 0
3 years ago
Read 2 more answers
Coral reefs that are preserved as sedimentary rocks are classified as
sergeinik [125]

The answer is; fossil

Fossil is defined as any dead organism ( or its trace or impression) of a past geological time that is naturally preserved in the earth in geological features such as rocks, bogs, and etcetera. Coral reef is  no exception because it is considered a living organism.  It is composed of colonies of coral polyps and algae that secrete a carbon carbonate skeleton.


7 0
3 years ago
What statement most directly demonstrates a way that the geosphere is involved in the nitrogen cycle
Ulleksa [173]

B. bacteria that convert ammonia into nitrites and nitrates are found in the soil  

This statement best demonstrates a way that the geo-sphere is involved in the nitrogen cycle.

A nitrogen cycle is defined as the movement of nitrogen between the atmosphere, biosphere, and geo-sphere in different forms. Ammonia is converted to nitrates by nitrifying bacteria in the soil. Then the plants absorb these nitrates from the soil and use these to build up proteins.


6 0
3 years ago
Read 2 more answers
Box has a mass of 100grams and a volume of 25centimeters. What is the density?
Free_Kalibri [48]

Answer:

4g/cm³

Explanation:

Hello !

<u>density formula</u>

p = m/V

m = mass

V = volume

p = 100g/25cm³ = 4g/cm³

Good luck !

Al3xis

8 0
3 years ago
Other questions:
  • Why are nutrition molecules important
    8·1 answer
  • How many alleles are there for the four main types of human blood?<br> Please answer fast
    6·1 answer
  • Researchers were trying to locate the Protein Clasp inside the cell. Immunofluorescence microscopy of STEK-1 cells was performed
    15·1 answer
  • Which type of medicine refers to a groups of medical treatments, practices and products that can be used in conjunction with con
    10·1 answer
  • Sheena wants to measure the volume of a ball that is 24 cm across. How should she set up her equation?
    13·2 answers
  • A woman who is in the first trimester of her pregnancy has told the nurse, "I've stopped taking my blood pressure pill because I
    8·1 answer
  • Which rna base bonded with the thymine
    14·1 answer
  • What is the simplest life form
    12·1 answer
  • What are three ways mutations can occur<br>I will give brainlest answer​
    7·2 answers
  • Its easy! If right will give brainlist! Don't overthink..:) Just answer
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!