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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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Answer:

The word radon is derived from radium, of which radon is gas. Early in its discovery it was also called radium emanation and niton, which comes from the Latin nitens, Since 1923, however, it has been called radon.

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What part of an atom is involved in a chemical reaction?
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4 years ago
6. How many moles of water would require 92.048 kJ of heat to raise its temperature from 34.0 °C to 100.0 °C? (3 marks)​
scoray [572]

Taking into account the definition of calorimetry, 0.0185 moles of water are required.

<h3>Calorimetry</h3>

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).

So, the equation that allows to calculate heat exchanges is:

Q = c× m× ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

<h3>Mass of water required</h3>

In this case, you know:

  • Heat= 92.048 kJ
  • Mass of water = ?
  • Initial temperature of water= 34 ºC
  • Final temperature of water= 100 ºC
  • Specific heat of water = 4.186 \frac{J}{gC}

Replacing in the expression to calculate heat exchanges:

92.048 kJ = 4.186 \frac{J}{gC}× m× (100 °C -34 °C)

92.048 kJ = 4.186 \frac{J}{gC}× m× 66 °C

m= 92.048 kJ ÷ (4.186 \frac{J}{gC}× 66 °C)

<u><em>m= 0.333 grams</em></u>

<h3>Moles of water required</h3>

Being the molar mass of water 18 \frac{g}{mole}, that is, the amount of mass that a substance contains in one mole, the moles of water required can be calculated as:

amount of moles=0.333 gramsx\frac{1 mole}{18 grams}

<u><em>amount of moles= 0.0185 moles</em></u>

Finally, 0.0185 moles of water are required.

Learn more about calorimetry:

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Yanka [14]

Answer:

tendons and ligaments

6 0
3 years ago
How much energy is required to boil 65 grams of 100°C water<br> And then heat the steam to 150°C?
Artyom0805 [142]

Answer:

13598 J

Explanation:

Q = m × c × ∆T

Where;

Q = amount of energy (J)

m = mass (grams)

c = specific heat capacity

∆T = change in temperature

m = 65g, specific heat capacity of water = 4.184J/g°C, initial temperature= 100°C, final temperature = 150°C

Q = 65 × 4.184 × (150 - 100)

Q = 271.96 × 50

Q = 13598 J

Hence, 13598 J of energy is required to boil 65 grams of 100°C water and then heat the steam to 150°C.

8 0
3 years ago
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