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3 years ago

A hydroelectric dam produces renewable energy for the local area. Which best explains why more hydroelectric dams are not built?

Chemistry

1 answer:

romanna [79]3 years ago

7 0

Answer:

The dam disrupts the river wildlife and ecosystem.

Explanation:

Though it is believed that using the dam as a power generation or hydroelectric power supply generates no greenhouse gases, it, however, has many disadvantages which make it deemed not suitable or sustainable for use in the contemporary time.

Majorly, the top reason why more hydroelectric dams are not built is that "the dam disrupts the river wildlife and ecosystem."

Also, it affects the water quality and other use of water for humans such as recreational use.

There is also a possible chance of dams producing methane; a greenhouse gas through the organic materials in the water that is rotting.

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If the rate law for the reaction A LaTeX: \longrightarrow

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k=.240/(.4)^2=1.5 assuming [A]2 means [A] squared

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3 years ago

Which of the following is a definition of a base? O a. behaves as a catalyst. O b. accepts H ions from acids. Oc. turns cloudy w

yan [13]

Answer: b. accepts $H^+$ ions from acids

Explanation:

According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions $(OH^-)$ when dissolved in water and an acid is defined as a substance which donates hydronium ions $(H_3O^+)$ in water.

According to the Bronsted Lowry conjugate acid-base theory, an acid is defined as a substance which donates $H^+$ ions and a base is defined as a substance which accepts $H^+$ ions.

$NH_3+H_2O\rightarrow NH_4^++OH^-$

Here water is donating $H^+$ ions, and thus act as acid and ammoia $NH_3$ is accepting $H^+$ ions from water and thus is a base.

According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.

Thus base is a substance which accepts $H^+$ ions from acids.

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3 years ago

What is a definition for ergonomics?

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The study of people's efficiency in their working environment.

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3 years ago

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If the pressure, volume, and the number of moles of a gas are known, which is needed to calculate the universal gas constant fro

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The tempreature of the gas because
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4 years ago

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Aqueous sodium bromide reacts with chlorine gas to form aqueous sodium chloride and liquid bromine .

xxMikexx [17]

Answer:

2 NaBr(aq) + Cl₂(g) ⇒ 2 NaCl(aq) + Br₂(l)

Explanation:

Let's consider the unbalanced equation that occurs when aqueous sodium bromide reacts with chlorine gas to form aqueous sodium chloride and liquid bromine. This is a single displacement reaction.

NaBr(aq) + Cl₂(g) ⇒ NaCl(aq) + Br₂(l)

We will start balancing Cl atoms by multiplying NaCl by 2.

NaBr(aq) + Cl₂(g) ⇒ 2 NaCl(aq) + Br₂(l)

Then, we get the balanced equation by multiplying NaBr by 2.

2 NaBr(aq) + Cl₂(g) ⇒ 2 NaCl(aq) + Br₂(l)

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3 years ago