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alexdok [17]
3 years ago
11

Which statement best describes how dynamic equilibrium relates to a saturated solution of sodium chloride? The concentration of

the dissolved particles remains constant. No more solid dissolves in a saturated solution. Each second, the amount of solid sodium chloride that dissolves equals the amount of solid sodium chloride that recrystallizes. Each second, solid sodium chloride dissolves and solid sodium chloride recrystallizes.
Chemistry
2 answers:
Nookie1986 [14]3 years ago
8 0

Answer:

C) Each second, the amount of solid sodium chloride that dissolves equals the amount of solid sodium chloride that recrystallizes.

Explanation:

kati45 [8]3 years ago
4 0
<span>Each second, solid sodium chloride dissolves and solid sodium chloride recrystallizes. </span>
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Melting occurs when the particles in a solid ________.<br><br>please help!!​
Rzqust [24]

Answer:

Vibrate?

Explanation:

In a solid the strong attractions between the particles hold them tightly packed together. Even though they are vibrating this is not enough to disrupt the structure. When a solid is heated the particles gain energy and start to vibrate faster and faster.

6 0
3 years ago
B. Why is this number called a "mass” number?
deff fn [24]

<u>Answer:</u>

The mass of the atom depends on the sub atomic particles present in the nucleus of an atom.

That is, the protons and the neutrons.

Electrons are present around the nucleus and the mass is negligible since its mass is very very less.

<em>mass of a proton = 1.673\times10^{-27} kg</em>

<em>mass of a neutron = 1.675 \times 10^{-27} kg</em>

<em>mass of an electron = 9.109 \times 10^{-31} kg</em>

Mass number represents the mass of one particular isotope and it is a whole number for example, _6 C^{13}

Mass number is 13 and atomic number is 6 for the carbon isotope C-13.  

Atomic mass is different from mass number and it is a fraction since it is the average atomic mass of all the isotopes of an atom.

Atomic mass of C is 12.011 amu which we see in the periodic table is the average atomic mass of isotopes C-12, C-13 and C-14.

7 0
4 years ago
Complete the following chemical equation. 2KMnO4 + Heat ----------- + MnO2 + -----------
Lady bird [3.3K]

Answer:

2 KMnO4 → K2MnO4 + MnO2(s) + O

Explanation:

Here, the oxidation state of manganese changes as the potassium permanganate (oxidation state +7) decomposes to potassium manganate (oxidation state +6) and manganese dioxide (oxidation state +4). Oxygen gas is also liberated.

8 0
3 years ago
What occurs when an optically active alcohol reacts with HBr to give an alkyl halide? Multiple Choice the chirality center retai
denpristay [2]

Answer:

The incomplete and varying inversion of configuration takes place at the chirality center.

Explanation:

When optically active alcohols react with HBr an SN1 reaction occurs.

In SN1 reactions an intermediate carbocation is formed in which the nucleophile can attack it on either side of the molecule. Therefore, there is a partial inversion of the center of chilarity of the molecule.

8 0
4 years ago
Read 2 more answers
suppose that two hydroxides, moh and m′ (oh)2, both have a ksp of 1.39 × 10−12 and that initially both cations are present in a
11Alexandr11 [23.1K]

When base is added in order to increase the pH of a solution, it results in MOH salt <u>precipitating first.</u>

Equation :

MOH (s)  ⇄ M⁺ (aq)  ₊ OH⁻(aq)

Ksp = [M⁺] [OH⁻]

Ksp = 1.39×10⁻¹² and [M⁺] = 0.001M

∴ 1.39×10⁻¹² = (0.001M) [OH⁻]

[OH⁻] =  1.004×10⁻¹⁹M

pOH = -log [OH⁻] =  11.9

pH = 14 - pOH

= 14 - 11.9

<u>pH = 2.1</u>

To learn more about solubility equilibrium ;

https://brainly.in/question/9213521

#SPJ4

8 0
2 years ago
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