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horsena [70]
1 year ago
9

Nuclear power plants use a fission reaction of uranium to generate heat to power a generator. A fission reaction is a chain reac

tion that continues to build and create more heat. How is the chain reaction controlled?
A.
The amount of uranium fuel can be reduced to slow the chain reaction down.
B.
The plant uses control rods that can be inserted into the reaction vessel to control the reaction.
C.
Water is added to the reaction to the reaction vessel to cool it down and slow the chain reaction.
D.
The extra heat that is created from the chain reaction is released into the air and keeps the reaction under control.
Chemistry
1 answer:
LekaFEV [45]1 year ago
7 0
ANSWER
B.

Explanation : it’s B because the control rods used are usually made of boron which boron is a non fissile material hence won’t undergo fission when bombarded or collided with neutrons.
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The ecosystem services provided by the each of the given examples are as follows:

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<h3>Ecosystem services</h3>

Ecosystem services are defined as the benefits derived by man from the surroundings ecosystems.

<h3>Categories of ecosystem services</h3>

The four categories of ecosystem services are:

  • regulating services,
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A cornfield in Kansas provides provisioning services.

Bacteria that decompose waste along the Gulf Coast provides regulating services.

Ocean currents that keep Pacific Northwest air cool and moist provides regulating services.

Flower garden at a national landmark provides cultural services.

Lumber from an oak tree provides provisioning services.

Animals that eat seeds and then spread the seeds through their waste regulating services.

Learn more about ecosystem services at: brainly.com/question/2191258

7 0
2 years ago
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astraxan [27]

Answer:

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What happens to a Lithium atom for it to become an Li+1 ion?
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Answer:

If an atom gains or loses an electron, it bacomes an ion. An atom that gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion

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A lithium atom has 3 protons and 3 electrons. It can lose one of its electrons, making it an ion. It now has more positive protons than electrons so it has an overall positive charge. Therefore it is a positive ion.

A fluorine atom will tend to gain, rather than lose, an electron. By gaining a negative electron, it has an overall negative charge. It has become a negative ion.

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