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Scorpion4ik [409]
3 years ago
5

How does a hydroelectric power plant convert energy?

Chemistry
2 answers:
Schach [20]3 years ago
4 0

Answer: edge 2020

A number of energy transformations occur when water that is stored behind a dam is changed into electrical energy. For each step listed, identify the energy transformation.

Lake water flows downward through tunnels.

✔ potential to kinetic

Flowing water turns turbines.

✔ kinetic to mechanical

Turbines generate electricity.

✔ mechanical to electrical

Explanation:

Oksana_A [137]3 years ago
3 0

Answer:

D. As water flows through the channels toward the turbines, it has kinetic energy. This is changed to mechanical energy as the water turns the turbines. Then the mechanical energy of the turbines is changed to electrical energy by the generator.

Explanation:

I hope this helps. :)

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At night,plants take in the gas of​
IgorC [24]

Answer:

Oxygen.

Explanation:

They take in oxygen from the air. This is the process of respiration.

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2. What is the difference between an organ and an organ system
aleksandrvk [35]
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8 0
3 years ago
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To answer this question, you will need to write the balanced equation and set up a BCA table. Using appropriate rounding rules,
Elenna [48]

Water decomposes when electrolyzed to produce hydrogen and oxygen gas. If 2.5 grams of water were decomposed 1.04 grams of oxygen will be formed.

BCA table:

2H_{2}O ⇒ H_{2} + O_{2}

B  0.13        0 + 0

C  -0.13      0.065 + 0.065

A  0             0.065

Explanation:

Balanced equation for water decomposition into hydrogen and oxygen gases

   2H_{2}O ⇒ H_{2} + O_{2}

B  0.13        0 + 0

C  -0.13      0.065 + 0.065

A  0             0.065

Number of moles of water = \frac{mass}{atomic mass of 1 mole}

mass = 2.5 grams

atomic mass= 18 grams

number of moles can be known by putting the values in the formula,

n = \frac{2.5}{18}

  = 0.13 moles

2 moles of water gives one mole of oxygen on decomposition

so, 0.13 moles of water will give x moles of oxygen on decompsition

\frac{1}{2} = \frac{x}{0.13}

x = 0.065 moles of oxygen will be formed.

moles to gram will be calculated as

mass =number of moles x atomic mass

        = 0.065 x 16

         = 1.04 grams of oxygen.

7 0
3 years ago
5. A 25 kg object travels a distance of 90 m in 30 s. Find the momentum
xz_007 [3.2K]

Answer:

★ v = d/t

★ v = 90/30

★ v =3

<u>Acc</u><u> </u><u>to</u><u> </u><u>question</u>

★ momentum = mass * velocity

★ m = 25×3

★ m = 75kgm/s

Hope it help

6 0
3 years ago
Read 2 more answers
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