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snow_tiger [21]
3 years ago
14

Materials of low mass are combined to form a substance of higher mass during ____. a. fission c. both A and B b. fusion d. neith

er A nor B Please select the best answer from the choices provided
Chemistry
1 answer:
Andrei [34K]3 years ago
7 0
<h2>The required "option is b) Fusion"</h2>

Explanation:

  • During fission, the nucleus of higher mass is broken down into the nucleus of lower mass in which a high amount of energy is released.
  • During fusion two nuclei combine or fuses to form a larger molecule of higher mass for which a high amount of energy is provided.
  • Therefore, the higher mass of a substance is formed with the combination of lower mass of a substance during the process of fusion.
  • Hence, the required option is Fusion.
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d.

all of the above is the correct answer


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A small portion of a crystal lattice is sketched below. What is the name of the unit cell of this lattice? Your answer must be a
Nikolay [14]

This is an incomplete question, the given sketch is shown below.

Answer : The name of given unit cell is, FCC (face-centered cubic unit cell)

Explanation :

Unit cell : It is defined as the smallest 3-dimensional portion of a complete space lattice which when repeated over the and again in different directions produces the complete space lattice.

There are three types of unit cell.

  • SCC (simple-centered cubic unit cell)
  • BCC (body-centered cubic unit cell)
  • FCC (face-centered cubic unit cell)

In SCC, the atoms are arranged at the corners.

Z=\frac{1}{8}\times 8=1

The number of atoms of unit cell = Z = 1

In BCC, the atoms are arranged at the corners and the body center.

Z=\frac{1}{8}\times 8+1=2

The number of atoms of unit cell = Z = 2

The given unit cell is, FCC because the atoms are arranged at the corners and the center of the 6 faces.

Z=\frac{1}{8}\times 8+\frac{1}{2}\times 6=4

The number of atoms of unit cell = Z = 4

Thus, the name of given unit cell is, FCC (face-centered cubic unit cell)

7 0
3 years ago
Can some body plz help correct me or correct the true or false answers I did wrong. I’m not sure there right :(
3241004551 [841]

4 3 and 5 are wrong:)

4 is true and 5 is false

4. insulators are really thick materials that keep electrons within their space.

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5. without the force of attraction, there are no atoms:)

for number 3, its a trick question

Hope this helped!

(learned these this year so I didn't forget them:)

8 0
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