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weeeeeb [17]
3 years ago
5

Why is DDT a dangerous environmental pollutant?

Chemistry
2 answers:
labwork [276]3 years ago
8 0

Answer:

Because it takes a very long time to degrade, in addition to being a general pesticide, that is, it is capable of killing pests, but also killing the fauna and flora of a region.

Explanation:

DDT stands for Dichloro-Diphenyl-Trichloroethane, a powerful and inexpensive pesticide that was widely used during WW2 to combat insect pests.

DDt is highly polluting and dangerous for the environment. This is because it is a generalist pesticide, that is, it does not act only in the extermination of pests, but it manages to kill any and all living organisms in the region where it is applied, which results in the death of the fauna and flora of a region. In addition, DDT spends a long period of time to be degraded and can remain active in nature for up to 30 years, which causes it to accumulate in soil and water, causing pollution and more deaths.

oksano4ka [1.4K]3 years ago
5 0
DDT was one of the first chemicals in widespread use as a pesticide.
<span><span>Food supplies: USDA found DDT breakdown products in 60% of heavy cream samples, 42% of kale greens, 28% of carrots and lower percentages of many other foods.</span><span>Body burden: DDT breakdown products were found in the blood of 99% of the people tested by CDC.</span><span>Health impacts: Girls exposed to DDT before puberty are 5 times more likely to develop breast cancer in middle age, according to the President’s Cancer Panel.</span></span>
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What is the half life of an isotope that is 75% decayed after 16 days?
inna [77]

Answer:

half life will be 8days

5 0
3 years ago
An alkene with the molecular formula C8H16 undergoes ozonolysis to yield a mixture of (CH3)2C=O and (CH3)3CCHO. The alkene is:
aalyn [17]

Answer:

2,4,4-trimethyl-2-pentene yields mixture of (CH_{3})_{2}C=O and (CH_{3})_{3}CHO

Explanation:

In ozonolysis (hydrolysis step involve a reducing agent such as Zn, Me_{2}S etc.), a pi bond is broken to form ketone/aldehyde.

Ketone is formed from di-substituted side of double bond and aldehyde is formed from mono-substituted side of double bond.

Ozoznolysis involves two consecutive steps : (1) formation of ozonide, (2) hydrolysis of ozonide.

Hydrolysis can be done with/without using reducing agent. Carboxylic acid/carbon dioxide/ketone is produced when hydrolysis is done without using reducing agent.

Here, 2,4,4-trimethyl-2-pentene yields mixture of (CH_{3})_{2}C=O and (CH_{3})_{3}CHO

Reaction steps are shown below.

8 0
3 years ago
A student uses a dye to change the colour of his tee-shirt. he fills a metal bucket with water. When the bucket is heated, what
Tanya [424]

Answer:

The particles begin to vibrate faster and more.

Explanation:

Adding heat to matter increases the energy, thus creating more movement. Eventually, the bucket will melt, turning to a liquid. While it is a sold, it still has particle movement, just not enough to break volume or shape.

8 0
3 years ago
How to compare and contrast a solution of hydrogen chloriide gas in water and toluene?
Airida [17]
<span>The solute is the substance that is being dissolved while the solvent is the base that the solute is bring dissolved in. For example, in salt water, salt would be the solute that dissolves into the water, and the water is the solvent that the salt is being dissolved in.</span>
4 0
3 years ago
Determine which physical conditions are necessary to support nuclear fusion and formation of stars.
Ilia_Sergeevich [38]

Answer:

Promotes Stellar Formation:

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Does Not Promote Stellar Formation:

-Decreased Gravitational Attraction

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Explanation:

Stars need at least three million kelvins to form, and the gravitational attraction helps form the star in the first place.

5 0
3 years ago
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