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devlian [24]
3 years ago
15

Which best describes nuclear fission?

Chemistry
1 answer:
rewona [7]3 years ago
7 0

Answer:

C. The splitting apart of atomic nuclei

Explanation:

Nuclear fission is the splitting apart of atomic nuclei.

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How long does it take the Earth to move from Point A to Point C?
e-lub [12.9K]

Answer:

24 hours

Explanation:

8 0
2 years ago
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1. Calculate the energy of a photon with a frequency of 3x1015 Hz.<br> ?????
Afina-wow [57]

Answer:

1.99 x 10⁻¹⁸J

Explanation:

Given parameters:

Frequency of the wave  = 3 x 10¹⁵Hz

Unknown:

Energy of the photon  = ?

Solution:

To solve this problem, we use the expression below;

     E  = hf

Where E is the energy, h is the Planck's constant and f is the frequency

Now insert the parameters and solve for E;

     E  = 6.63 x 10⁻³⁴ x 3 x 10¹⁵ = 19.9 x 10⁻¹⁹J or 1.99 x 10⁻¹⁸J

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3 years ago
Why do doctors worry more about a fever of a couple of degrees Celsius than a fever of a couple of degrees Fahrenheit
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Because Celcius is a larger amount than Fahrenheit. The units are farther apart.
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3 years ago
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If the valency of oxygen is 2, derive the valencies of the other elements present in the following oxides. Na2O, ZnO , Al2O3 , M
11Alexandr11 [23.1K]

Answer:

1)Na2O

let the valency of Na is x

2(x)+(2)=0

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2)ZnO

let the valency of Zn is x

x+2=0

x=-2

3)Al2O3

let the valency of Al is x

2(x)+3(2)=0

2x+6=0

2x=-6

x=-3

4)MgO

let the valency of Mg is x

x+2=0

x=-2

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3 years ago
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When you put an ice cube into a glass of room temperature water, why does the water get cold?
mel-nik [20]
The water gets cold because the ice cube is endothermic. Which means it takes in heat. It takes the warmth from the water and melts the ice cube which the ice cube releases coldness which cools down the water.
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3 years ago
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