I have included an overview of the topics you MUST include in your presentation.
Topic Outlines:

Biomass (10 points)

1. What does “Biomass” mean? How is Biomass being used today as a substitute for gasoline to run cars, trucks or buses?

2. What are some different ways Biomass is being used to heat homes today?

3. Name and explain 3 advantages/disadvantages in using Biomass compared to using Fossil Fuels or other alternative energies (specifically include environmental issues that can happen).

4. Explain the energy conversions when producing energy with Biomass. (Use the words: Potential Energy and Kinetic Energy).

Geothermal (10 point)
5. Where does geothermal energy come from?

6. How can geothermal energy be used to create electricity?

7. How can geothermal energy be used directly to heat homes and factories?

8. What is a “heat pump”?

9. Name and explain 3 advantages and disadvantages in using geothermal energy compared to using fossil fuels and other alternative energies. (Specifically include environmental issues that can happen).

Hydroelectric (10 points)

10. What is a good definition of hydroelectric power?

11. How does “moving water” get turned into electrical energy? Explain each part of the dam from the moving water to production of electricity.

12. Name and explain 3 advantages/disadvantages of getting electricity from hydroelectric power and how it compares to using fossil fuels or alternative energies. (specifically include environmental issues that can happen

13. Find one example in the U.S. that uses hydroelectric power to create electricity?

Answers

Answer 1
Biomass refers to any organic matter that comes from plants or animals, such as wood chips, crop residues, or animal waste. Biomass can be converted into various forms of energy, such as electricity, heat, and fuel, and is being used as a substitute for gasoline to run cars, trucks or buses by converting it into biofuels like ethanol, biodiesel, or biogas.

Biomass can be used to heat homes in several ways, such as burning wood pellets or chips in stoves or boilers, using agricultural waste or wood waste as fuel, or installing biogas digesters that can produce heat from organic waste.

Advantages of using biomass include:

1. Its renewable nature,

2. Its potential to reduce greenhouse gas emissions and dependence on fossil fuels, and

3. Its ability to provide local sources of energy.

Disadvantages include:

1. The high cost of production and transportation

2. The potential for deforestation and habitat loss

3. The release of pollutants and greenhouse gases during combustion

When producing energy with biomass, the potential energy stored in the organic matter is converted into kinetic energy by burning it or using other processes, such as gasification or pyrolysis, to release the energy. This kinetic energy can then be harnessed to generate electricity, heat, or fuel.

Geothermal energy comes from the heat that is generated from the Earth's core and mantle.

Geothermal energy can be used to create electricity by drilling wells into the Earth's crust and pumping hot water or steam to the surface, which can then drive turbines that generate electricity.

Geothermal energy can be used directly to heat homes and factories by circulating hot water or steam through pipes or using geothermal heat pumps.

A heat pump is a device that transfers heat from one place to another, such as from the ground to a building's heating system, by using a refrigerant to absorb and release heat.

Advantages of using geothermal energy include:

1. its low emissions and high efficiency,

2. its reliability and consistency,  

3. its potential for use in remote areas.

Disadvantages include:

1. the high upfront cost of installation,

2. the potential for depletion of geothermal reservoirs,

3. the risk of earthquakes and other geological hazards.

Hydroelectric power is a form of renewable energy that harnesses the power of moving water to generate electricity.

Moving water is channeled through a dam, which drives turbines that spin generators to produce electricity. The water is then released back into the river or diverted to another body of water. The dam also serves to regulate the flow of water and prevent flooding.

Advantages of using hydroelectric power include:its renewable nature, its potential for reliable and consistent power generation its ability to provide flood control and irrigation. Disadvantages include: the disruption of aquatic ecosystems, the potential for methane emissions from flooded land,  the high upfront costs of building dams and other infrastructure.

Hoover Dam, located on the Colorado River on the border between Arizona and Nevada, is a major example of a hydroelectric power plant in the U.S

What is the history of hydroelectric power?

The history of hydroelectric power dates back to the 19th century, with the development of water turbines and generators. The first hydroelectric power plant was built in Appleton, Wisconsin in 1882, by a man named H.J. Rogers.

However, the concept of using water to produce mechanical power had been around for centuries. In ancient times, waterwheels were used to power mills and other machinery, and in the Middle Ages, water power was used to operate various devices, such as water pumps, sawmills, and hammers.

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Related Questions

How many molecules of HCI are in 4.91 L of HCI acid at 25°C if the density equals 1.096 g/ml

Answers

To determine the number of HCl molecules in 4.91 L of HCl acid at 25°C, we can use the following steps:

Calculate the mass of the HCl acid in 4.91 L using its density.Convert the mass of HCl acid to the number of moles using its molar mass.Use Avogadro's number to convert the number of moles of HCl to the number of HCl molecules.Calculate the mass of the HCl acid in 4.91 L using its density:

[tex]\qquad\sf {Density = \dfrac{mass}{volume}}[/tex]

[tex]\qquad\sf{mass = density \times volume}[/tex]

[tex]\qquad\sf{mass = 1.096 \: g/mL \times 4.91\: L = 5.38\: kg}[/tex]

Convert the mass of HCl acid to the number of moles using its molar mass. The molar mass of HCl is 36.46 g/mol.

[tex]\sf{moles = \dfrac{mass}{ molar\: mass} = \dfrac{5.38\: kg}{36.46\: g/mol} = 147.6\: mol}[/tex]

Use Avogadro's number to convert the number of moles of HCl to the number of HCl molecules. Avogadro's number is [tex]6.02 \times 10^23[/tex] molecules/mol.

[tex]\sf number\: of\: HCl\: molecules = moles \times Avogadro's\: number[/tex]

[tex]\begin{aligned}\sf number\: of\: HCl\: molecules& =\sf 147.6 \: mol \times 6.02 \times 10^23\: molecules/mol \\& =\sf 8.88 \times 10^25\: molecules\end{aligned}[/tex]

Therefore, there are [tex]8.88 \times 10^25[/tex] HCl molecules in 4.91 L of HCl acid at 25°C, assuming the density of the acid is 1.096 g/mL.

[tex]\rule{200pt}{5pt}[/tex]

After addition of 20.00 mL of 0.500 M standard KOH solution to 10.00 mL of formic acid (HCOOH, Ka = 1.8 × 10-4), the equivalence point is reached. What is the molarity of the formic acid?

What is the pH at the equivalence point, based on the question above? Please make a suggestion for an appropriate indicator.

Answers

Answer: 3.79

Explanation: The balanced chemical equation for the reaction between formic acid (HCOOH) and KOH is:

HCOOH + KOH → HCOOK + H2O

We can use the stoichiometry of this reaction to calculate the number of moles of formic acid that reacted with the KOH:

moles of KOH = (20.00 mL)(0.500 mol/L) = 0.01000 moles

moles of HCOOH = moles of KOH

Therefore, the initial number of moles of formic acid is:

moles of HCOOH = (10.00 mL)(x mol/L) = 0.01000 moles

where x is the molarity of formic acid.

Solving for x, we get:

x = 1.00 M

Therefore, the molarity of the formic acid is 1.00 M.

At the equivalence point, all of the formic acid has reacted with the KOH, and the solution contains only the salt formed by the reaction, potassium formate (HCOOK). The pH at the equivalence point can be calculated using the equation for the salt hydrolysis constant:

Kb = Kw/Ka

where Kb is the base dissociation constant of the conjugate base (formate ion), Kw is the ion product constant for water (1.0 × 10^-14 at 25°C), and Ka is the acid dissociation constant of the acid (formic acid). Rearranging this equation, we get:

Kb/Ka = [OH^-][HCOO^-]/[HCOOH]

At the equivalence point, the concentration of the formate ion (HCOO^-) is equal to the concentration of the KOH added (0.01000 moles / 30.00 mL = 0.3333 M). We can assume that the concentration of the hydroxide ion (OH^-) is also equal to 0.3333 M, since KOH is a strong base and will dissociate completely. Substituting these values into the equation above, we get:

Kb/Ka = (0.3333)^2 / [HCOOH]

Solving for [HCOOH], we get:

[HCOOH] = (0.3333)^2 / (1.8 × 10^-4) = 6181.5 M

Taking the negative logarithm of this concentration, we get the pH at the equivalence point:

pH = -log[HCOOH] = -log(6181.5) = 3.79

Therefore, the pH at the equivalence point is 3.79.

Regenerate response

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