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lianna [129]
2 years ago
6

There are many ways of generating electrical energy. Research three of the following, describe how they work, and discuss the pr

os and cons of each of the three chosen electrical power plants:
thermal power plant (aka coal power plant)
nuclear power plant
solar power plant
hydroelectric power plant
geothermal power plant
tidal power plant
wind farms
Chemistry
1 answer:
skelet666 [1.2K]2 years ago
5 0

Answer:

Wind farms, nuclear power plant, and hydroelectric power plants

Explanation:

Winds farms:

Pros: Creates electrical energy easily, doesn't cause pollution and no fossil fuels.

Cons: Only works in windy climates, hard to function.

Nuclear plants:

Pros:Creates electrical energy out of wastes, very easy and doesn't require fossil fuels.

Cons: Causes mass pollution, very harmful to the ecosystem and humans.

Hydroelectric plants:

Pros: uses only water and turbines, no fossil fuels either.

Cons: Water usage causes faster evaporation, most dams overuse them.

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At higher temperatures,
valentinak56 [21]

Answer:

reaction rates increase because reactants move faster, collide more often, and produce more collisions with the required energy of activation.

Explanation:

<em>A</em><em>t</em><em> </em><em>h</em><em>i</em><em>g</em><em>h</em><em>e</em><em>r</em><em> </em><em>t</em><em>e</em><em>m</em><em>p</em><em>e</em><em>r</em><em>a</em><em>t</em><em>u</em><em>r</em><em>e</em><em>s</em><em>,</em><em> </em>the reactant atoms gain high kinetic energy which decreases the intermolecular forces of attraction between these atoms/molecules.

Hence the rate of collision is very high which decreases the activation energy and products are formed with in a short period of time.

3 0
3 years ago
5.
Musya8 [376]

Explanation:

In a physical change, the mass remains constant.

Hence the mass of the ice is the same as the water, which is 20g.

6 0
3 years ago
Read 2 more answers
1)Water takes this form above 100c (solid, liquid or gas)
olga55 [171]

Answer:

I say the 1st one I'm so terrible sorry if I'm wrong

Explanation:

Water can take many forms. At low temperatures (below 0°C), it is a solid. When at “normal” temperatures (between 0°C and 100°C), it is a liquid. While at temperatures above 100°C, water is a gas (steam).

The state the water is in depends upon the temperature.  Each state (solid, liquid, and gas) has its own unique set of physical properties.

5 0
3 years ago
What is the chemical name for the balanced equation? 2Al+3Pb(NO3)2=2Al(NO3)3+3Pb​
Zigmanuir [339]
  • The chemical name for reactant side:

                  Al - Aluminium, Pb(NO3)2 -  Lead(II) nitrate.

  • The chemical name for product side:

                  Al(NO3)3 - Aluminium nitrate, Pb - lead.

<u>Explanation</u>:

  • This is an oxidation-reduction (redox) reaction:

                       3 Pb^{II} + 6 e- → 3 Pb^{o} (reduction)

                       2 Al^{o} - 6 e- → 2 Al^{III} (oxidation)

Pb(NO3)2 is an oxidizing agent, Al is a reducing agent.

  • Reactants:                              

                                    Al uminium

              Names: Aluminum, Aluminium powder,  Al

              Appearance: Silvery-white-to-grey powder, Silvery-white,  

                                      malleable, ductile, odorless metal.

                             Pb(NO3)2 – Lead(II) nitrate

              Other names: Lead nitrate, Plumbous nitrate, Lead dinitrate

              Appearance: White colorless crystals,  White or colorless crystals

  • Products:

                            Al(NO3)3 – Aluminium nitrate

              Other names: Nitric Aluminum salt, Aluminum nitrate,

                                       Aluminium(III) nitrate

              Appearance: White crystals, solid | hygroscopic

                                   Pb  - lead

              Names: Lead, Lead metal, Plumbum

              Appearance: Bluish-white or silvery-grey solid in various forms.

                                     Turns tarnished on exposure to air. A heavy, ductile,

                                     soft, gray solid.

8 0
3 years ago
The atomic mass of hydrogen is one. True False
mafiozo [28]

Answer:

It's true :) Hope that helps

8 0
3 years ago
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