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horrorfan [7]
1 year ago
5

Which is a characteristic of nuclear fission?

Chemistry
1 answer:
FinnZ [79.3K]1 year ago
4 0
A nucleus spontaneously splits and absorbs energy.
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Entropy means that _________.A. the quantity of usable energy declines with each transformationB. energy can be neither created
son4ous [18]

Answer:

answer A

Explanation:

A) the quantity of usable energy declines with each transformation → True . Since the entropy increases , the amount of energy that can not be converted to useful energy increases and since the total amount of energy is conserved, the quantity of useful energy decreases.

B) energy can be neither created nor destroyed → False in the context of entropy , since the energy is conserved regardless of the changes in entropy (First law → conservation of energy vs second law → increase of entropy)

C)  life should be impossible → False . Since the second law states that the entropy of the <u>universe </u>increases with time . Then the system (life) can experience a decrease in entropy  at the expense of a larger increase in entropy of the surroundings ( so the net increase is positive)

D) it is not possible to observe an increase in molecular organisation → False . Same as C. A system  can experience a decrease in entropy at the expense of a larger increase in entropy of the surroundings ( so the net increase is positive)

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3 years ago
In one kind of nuclear reaction, two nuclei fuse, or join together, to form a larger nucleus. This kind of reaction happens only
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High pressures are necessary to create such reaction so that the particles will be able to overcome electrostatic repulsion. The particles that make up a particular atom are covered by shells of energy that react to different impulses like pressure. When particles are exposed to extreme environmental pressure it has the tendency to split its particles and undergo nuclear fusion successfully.
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3 years ago
Which element is most plentiful in Earth's crust?
dem82 [27]

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Oxygen is the most contain in earth but you asked in a,b,c and d. So I'll choice A. aluminium.

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alina1380 [7]

a: is the correct anwser

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What are your main fears about this class (if any)?​
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This is based on your personal opinion lol but ig you can say public speaking
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