Which of the following best describes a fission reaction involving lithium? (1 point)A. Two lithium atoms form bonds with each other, absorbing a large amount of energy.
B. The nuclei of lithium atoms join together to form heavier isotopes, and energy is released.
C. An atom of lithium absorbs electrons, undergoes an increase in energy level, and splits into fragments.
D. The nucleus of an atom of lithium splits, resulting in smaller fragments and the release of a large amount of energy.

Nuclear power plants produce a great amount of energy using fission reactors. However, there are safety risks. Which of the following risks are related to using nuclear power plants? (1 point)

A. storage and disposal of radioactive waste
B. production of radioactive atmospheric pollutants
C. improper handling of volatile radioactive chemicals
D. lack of adequate space to carry out reactions involving radioactive materials

Which of the following natural resources does not contribute to global warming or air pollution? (1 point)

A.coal
B.natural gas
C.nuclear power
D.oil

Which of the following statements about natural resources is correct? (1 point)

A. Oil is more difficult to remove from the Earth than coal.
B. Coal is present in small quantities compared to other fossil fuels.
C. Natural gas has a limited supply and an uneven worldwide distribution.
D. Nuclear power produces small amounts of energy from extremely large masses of fuel.

Which of the following natural resources is considered non-renewable? (1 point)

A. biofuel
B. geothermal power
C. nuclear power
D. solar power

Heat energy beneath the Earth's surface heats underground water into steam to operate steam turbines. This describes which of the following resources? (1 point)

A. biofuel
B. geothermal power
C. hydropower
D. nuclear power

Which of the following is the most important challenge in the protection of our environment? (1 point)

A. Getting society to care about environmental issues.
B. Repairing long-term damage done to the environment.
C. Cleaning up after a major polluting event, like an oil spill.
D. Meeting society's needs while being responsible with natural resources.

Which of the following chemicals is not an ozone-depleting substance in the stratosphere? (1 point)

A. methyl bromide
B.carbon tetrachloride
C. xenon
D. methyl chloroform

Today we use synthetic polymers to replace natural materials such as cotton, wood, and stone. What is one disadvantage of using synthetic materials rather than natural materials? (1 point)

A. Synthetic materials are often easy to produce.
B. Synthetic materials often do not decay naturally.
C. Synthetic materials are often much stronger than natural materials.
D. Synthetic materials are often made from strong radioactive materials.

Some technologies are now available to solve the problem of acid rain, which can alter the pH level of lakes and rivers. Which of the following is the best technology to improve a lake affected by acid rain? (1 point)

A. new alternative energy sources
B. recycling of materials to reduce air pollution
C. an environmentally safe base to neutralize the lake
D. transportation equipment to move all aquatic life to safety

Which of the following human environmental accidents has had devastating effects on groundwater, rivers, oceans, and lakes? (1 point)

A. harmful pesticides
B. nuclear accidents
C. ozone depletion
D. oil spills

When an oil spill occurs in an aquatic environment, what generally is the effect? (1 point)

A. The ecosystem is damaged but quickly rebounds.
B. No serious damage occurs since oil and water do not mix.
C. The abiotic factors are seriously affected, but the biotic are unaffected.
D. The whole ecosystem is negatively affected, and long-term damage may occur.

Which of the following most correctly predicts the impact on the environment if sustainable practices are not followed? (1 point)

A. The ecosystems of the world will be uniformly damaged, but they will rebound quickly.
B. Natural resources will be depleted, and the negative impact may be too severe to recover.
C. The environment will not be adversely affected because the ecosystem of the world is too large.
D. Rain forests will be depleted, but the oceans will be preserved because of their geographical isolation.

Heat pollution occurs when an aquatic environment experiences an increase in temperature, which can result in devastating effects to the ecosystem. Which of the following is a major cause of heat pollution? (1 point)

A. airports and seaports
B. farming and agriculture
C. residential housing areas
D. factories and power plants

Answers

Answer 1
Answer:

Answer:

1)D)Fission is the process when the nucleus of an atom splits after being bombarded by neutrinos.

2)A)Storage and disposal of radioactive waste is a problem all nuclear power plants face. Most of them dipose the waste underneath the ground. There have even been proposals to send the nuclear waste to the moon.

3)C)Nuclear Power because it does not produce greenhouse gas emissions.

4)A) Oil is more difficult to remove from the Earth than coal This is why, to extract oil, you need an extraction pump and other equipment, while coal can be removed from the earth after digging.

5)A) biofuel - because it comes from agriculture, and agriculture is the biggest contributor to worldwide greenhouse emissions.

6)B) Geothermal power - geothermal power uses the heat from the earth to produce energy.

7)D) - Humans have seemingly unlimited needs and these needs have to be met without destroying the enviroment.

8)C) Xenon - The other three substances listed are classified as Ozone depleting susbstances according to the Ministry of the Enviroment in New Zealand.

9)B) Synthetic materials often do not decay naturally - The best example is plastic, which is a synthetic material that takes hundreds or even thousands of years to decay.

10)C) An environmentally safe base to neutralize the lake - This can be done by oxygenizing the lake.

11)D) Oil spills - Unfortunely, these events have taken place many times. The oil spill in the Gulf of Mexico caused by British Petroleum greatly affected the coasts and waters of Louisiana.

12)D)The whole ecosystem is negatively affected, and long-term damage may occur - An oil spills afects aquatic plants, animals, birds, and the water itself.

13)B)Natural resources will be depleted - Oil might even run out completely. Besides, climate change would raise the sea levels and flood thousands of cities.

14)D) factories and power plants - especially thermal power plants that burn coal to produce energies.

Answer 2
Answer:

Answer:

D, ABC, C, A, ?, B, A, ?, B, C, D, D, C, D

Explanation:

(Answers and explanations in order of questions)

Fission reactions are when the nucleus of an atom splits producing smaller nuclei and energy

Lack of space isn't a safety risk

Coal, natural gases, and oil all are burned to create energy which releases carbon into the atmosphere, polluting it. Nuclear power doesn't burn carbon-based substances and so is fine

I dunno but C and D are wrong

All of them are technically renewable?

Geothermal energy uses the Earth's heat, hence the name

Nothing can happen if people ignore it

Unsure

Synthetic polymers are plastics, which do not decay naturally

A base would react with the acid to neutralise it which is the fastest way to improve the lake

Not pesticides?

Oil spills kill aquatic animals and life quickly, which causes huge damage to ecosystems

If nothing changes nonrenewable things will run out and bad practices will have caused irreparable damage worldwide

Big factories are pumping out the bad stuff


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Given the reaction below, which is the reduced substance?Mg + Cl2 Right arrow. Mg2+ + 2Cl-
2CI-
CI2
Mg
Mg2+

Answers

Cl2 is the reduced substance

How does the solubility of a gas change with increasing temperature

Answers

The definition of solubility is the maximum quantity of solute that can dissolve in a certain quantity of solvent or quantity of solution at a specified temperature or pressure (in the case of gaseous solutes). For Gases, solubility decreases as temperature increases (duh...you have seen water boil, right?) The physical reason for this is that when most gases dissolve in solution, the process is exothermic. This means that heat is released as the gas dissolves. This is very similar to the reason that vapor pressure increases with temperature. Increased temperature causes an increase in kinetic energy. The higher kinetic energy causes more motion in the gas molecules which break intermolecular bonds and escape from solution. Do you need any more?


What is a valence electron and why are they so important to a chemist?

Answers

Valence electrons are the electrons that reside in an atom's outermost shell. The role of valence electrons in determining an atom's reaction makes them crucial. You can count how many electrons are at the highest energy level by writing an electron configuration.

How do the valence electrons function?

The electrons in an atom's outermost shell are called valence electrons. … Because the electrons in the outermost shells of two atoms are the first to come into contact with one another and are the ones that control how an atom will react in a chemical reaction, when two atoms interact.

The outer-shell electrons of an atom are known as valence electrons. The valence electrons in an atom control its reactivity.

To learn more about Valence electron refer to:

brainly.com/question/371590

#SPJ2

They are important because they are the electrons that help the atom to bond with another atom. They are in the outer most shell. ☺️

How many liters of 0.760 Molar NaOH are needed to completely neutralize 145 mL of 11.33 Molar HCL

Answers

Answer:

35.00 mL

Explanation:

What is the 2s in 42,256

Answers

42,256 = 2,000

42,256 = 200

together they'd be 2,200 (if that's what you needed as well)

HELP QUICK PLZ!!! What is the relationship between the structure of a substance and the properties of a substance? Explain.

Answers

Answer:

The bonding angle, the kind of bonds, the size of the molecule, and the interactions between molecules are all part of the chemical structure. Slight alterations in the chemical structure can have a significant impact on the compound's characteristics.

Explanation:

The bonding angle good luck