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Julli [10]
3 years ago
15

''Particles have forces of attraction between them" PLEASE HELP ME WRITE A SHORT PARAGRAPH ABOUT THIS

Chemistry
1 answer:
Tom [10]3 years ago
6 0
If you are talking about atoms and molecules, Heres what I would write. 

Particles have an attraction between each other because two objects of the same mass <span>will share a center of gravity that is exactly the midpoint between the two objects, so this means that neither of the particles will have more attraction then each other. So this also means that they would orbit each other. A</span><span>n orbit is a way of "circular falling."

I hope that this helps! </span>
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What is the ph of a 4.8 m pyridine solution that has kb = 1.9 × 10-9? the equation for the dissociation of pyridine is?
Eddi Din [679]

Answer: 9.98


Explanation:


1) The equation for the dissociation of pyridine is:


C₅H₅N₅(aq )+ H₂O(l) ⇄ C₅H₅NH⁺(aq) + OH⁻(aq)


2) Kb equation:


Kb = [C₅H₅NH⁺(aq)] [OH⁻(aq)] / [C₅H₅N₅(aq )]


Where:


[C₅H₅NH⁺(aq)] = [OH⁻(aq)] ← from the equilibrium reaction


[C₅H₅N₅(aq )] = 4.8 M ← from the statement


⇒ 1.9 × 10 ⁻⁹ = x² / 4.8 ⇒ x² = 9.12 × 10⁻⁹


⇒ x = 9.55 × 10⁻⁵ = [OH⁻(aq)]


3) pOH


pOH = - log [OH⁻(aq)] = 4.02


4) pOH + pH = 14


⇒ pH = 14 - 4.02 = 9.98

4 0
3 years ago
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The most negative electron affinity is most likely associated with which type of atoms
Alona [7]
Negative ions

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5 0
3 years ago
What is the name for the point at which the indicator changes color in a titration? turning point end point indicator point colo
Sedaia [141]
It says on google
<span>An acid-base indicator (e.g., phenolphthalein) changes color depending on the pH. Redox indicators are also frequently used. A drop of indicator solution is added to the titration at the start; when the color changes the endpoint has been reached, this is an approximation of the equivalence point.</span>
8 0
3 years ago
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09. Where does Mitosis take place? I
mash [69]

Answer:

In plants mitosis takes place throughout life in growing regions called the meristems. Replacements as cells wear out. The cells of the skin and bone marrow are sites of active mitosis replacing skin cells and red blood cells that only have a limited life. Repair.

Explanation:

5 0
2 years ago
Density of iron is 7.8 g/cc. How much would 10 cc of iron weigh?
Elena-2011 [213]

Answer:

<h3>The answer is 78 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 10 cc

density = 7.8 g/cc

So we have

mass = 7.8 × 10

We have the final answer as

<h3>78 g</h3>

Hope this helps you

4 0
3 years ago
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