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Pavel [41]
4 years ago
15

1)How can scientists use a seismograph to determine the density and depth of Earth's layers?

Chemistry
1 answer:
Masteriza [31]4 years ago
3 0
Hello Olivia!!! 

<span>Q.) Describe at least two geological events that can occur at a divergent boundary.
</span>
A.)Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges. Divergent boundaries also form volcanic islands which occur when the plates move apart to produce gaps which molten lava rises to fill.

Hope this can help!!! 
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The force of attraction between a divalent cation and a divalent anion is 1.64 x 10-8 N. If the ionic radius of the cation is 0.
Elden [556K]

The radius of the anion is 7.413 nm

<h3>How to calculate the force of attraction between charges</h3>

The force of attraction (F) is given by the formula:

  • F = (1/4π∈r²)(Zc*e)(Za*e)

where:

∈ = permittivity of free space = 8.85*10⁻¹⁵ F/m

Zc = charge on the cation = +2

Zc = charge on the anion = -2

e = charge on an electron = 1.602 * 10⁻¹⁹ C

r = interionic distance

r = rc + ra

where rc and ra are the radius of the cation and anion respectively

F = 1.64 * 10⁻⁸ N

Therefore based on the equation of force of attraction:

1.64 *10⁻⁸ = [1/4π(8.85*10⁻¹⁵)r²](2 * 1.602*10⁻¹⁹)²

r² = 5.63 * 10⁻¹⁷

r = 7.50 nm

Since r = rc + ra

where rc = 0.087 nm

thus, ra = r - rc = 7.50 - 0.087

ra = 7.413 nm

Therefore, the radius of the anion is 7.413 nm

Learn more about ionic radius at: brainly.com/question/2279609

6 0
3 years ago
Compare and contrast analog and digital signals
Gennadij [26K]

Answer:

ones analog and ones digital.

Explanation:

The difference between the two are that one loses quality but is easier to transfer, however digital takes longer to transfer, however this makes the quality the same.

7 0
3 years ago
Many bacteria cannot reproduce and cooler temperatures in our destroyed at high temperatures. How do you humans take advantage o
12345 [234]

freezer and refrigerator too cold for most bacteria to grow .oven too hot for bacteria to survive

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3 years ago
During the reaction, 3.40 μmolμmol of HClHCl are produced. Calculate the final pHpH of the reaction solution. Assume that the HC
Bezzdna [24]

Answer:

Final pH of the solution = 5.46

Explanation:

The detailed step is shown in the attachment.

6 0
3 years ago
Significant digits are the number of digits that reflect the precision of a measurement or number. true or false
Marizza181 [45]
Im pretty certain thats true.
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3 years ago
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