Water pollution that washes into storm sewers from many places, such as parking lots and lawns, is known as nonpoint-source pollution. True or false ?

Answers

Answer 1

Answer:

The statement that is given from above “Water pollution that washes into storm sewers from many places, such as parking lots and lawns, is known as nonpoint-source pollution” is true. This is difficult to treat as the source may come from different points.

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We can also use the equation for enthalpy change for physical phase changes. Consider the phase change H2O(l) → H2O(g). Calculate ΔHrxn.Use ΔHf values from the table above.ΔHrxn = _____
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Which of these pairs of elements have the same number of valence electrons phosphorus (P) and chlorine (Cl)
beryllium (Be) and calcium (Ca)
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Answers

Beryllium (Be) and Calcium (Ca)

You spot a friend walking on a moving walkway in an airport. You are not on the walkway and you want to keep up with her.At what speed do you need to walk?

A. the speed of the walkway multiplied by the speed at which she is walking

B. the speed of the walkway minus the speed at which she is walking

C. the speed of the walkway plus the speed at which she is walking

Answers

I think the answer is A.

A. the speed of the walkway multiplied by the speed at which she is walking

The speed she is walking accelerates her speed by the base speed of the walkway.

Answer:

The answer is C. the speed of the walkway plus the speed at which she is walking

How does CFL lamps help in conservation of energy?

Answers

CFL means compact fluorescent lamp

It can save five times its purchase price in electricity cost because it contains toxic mercury that is equivalent in working: electrons that are bound to mercury atoms are excited to states where they will radiate ultraviolet light as they return to lower energy level, this ultraviolet light will be converted into visible light as it strikes to the coating of the bulb. Like LED that is high-efficiency house lighting.

What is the empirical formula for Hg2(NO3)2

Answers

I think it's HgNO3 because the subscripts on Hg and No3 are divisible by 2 :)

What do you think will happen to the ecosystem if all the coral reefs are destroyed?

Answers

Animals that rely on coral for protection and cover, such as grouper, snapper, oysters and clams, would also be negatively impacted. And because this marine life is a vital staple in many peoples' diets, the death of the coral reefs would exacerbate the problem of feeding these groups [source: Skoloff].

Which risk is associated with using nuclear fission to produce energy in a power plant?(1) depletion of hydrocarbons
(2) depletion of atmospheric oxygen
(3) exposure of workers to radiation
(4) exposure of workers to sulfur dioxide

Answers

Answer:

The correct answer is option 3, that is, exposure of workers to radiation.

Explanation:

The process of nuclear fission takes place when uranium nuclei get bombarded with neutrons. This association dissociates the uranium nuclei apart, discharging radiation, heat, and more neutrons. The neutrons, which gets discharged results in a chain reaction as more uranium nuclei get bombarded, generating huge amounts of energy.

The massive concern related to a nuclear power accident is the negative influences of radiation on the human body. If an individual gets exposed to an acute dose of greater levels of radiation, the outcome would be radiation sickness. Radiation sickness is illustrated as illness resulting due to exposure to a large dose of radiation over a brief time duration. The signs may comprise nausea, skin burns, diarrhea, vomiting, general weakness, hair loss, and possibly death.

The risk that is associated with nuclear fission to produce energy in a power plant is 3) Exposure of workers to radiation.

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