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Alisiya [41]
3 years ago
5

What is climate? (site 2)

Chemistry
1 answer:
emmainna [20.7K]3 years ago
6 0
The weather conditions prevailing in an area in general or over a long period.
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How many neutrons are there in 8 molecules of <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B19%7D%7B9%7D%20f2" id="TexFormu
slega [8]

Answer:

128 neutrons

Explanation:

<em>How many neutrons are there in 8 molecules of </em>^{19} _9 F_2<em>?</em>

Step 1: Calculate the number of neutrons in 1 atom of F.

The atomic number (z) of F is 9 and its mass number (A) is 19. We can calculate the number of neutrons using the following expression.

n⁰ = A - Z = 19 - 9 = 10

Step 2: Calculate the number of neutrons in 1 molecule of F₂.

1 molecule of F₂ contains 2 atoms of F. The number of neutrons in  1 molecule of F₂ is:

(8 n⁰/1 atom F) × (2 atom F/1 molecule F₂) = 16 n⁰/1 molecule F₂

Step 3: Calculate the number of neutrons in 8 molecules of F₂

8 molecule F₂ × 16 n⁰/1 molecule F₂ = 128 n⁰

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3 years ago
The source of alpha particles in a smoke detector is the
pantera1 [17]

The source of alpha particles in a smoke detector is the Americium.

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3 years ago
Which is a chacteristic of a solution?
Setler [38]

Answer:

A solution is a homogeneous mixture of two or more substances. The particles of solute in a solution cannot be seen by the naked eye. A solution does not allow beams of light to scatter.

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Which of the following was not a geological clue used to support the theory of continental drift
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D. Samples of ocean water.

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The energy released by a nuclear fusion reaction is produced when
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Answer:

2

Explanation:

energy produced in nuclear fusion or even fission is due to mass defect and it can be calculated by Einstein equation e=mc2

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