The molar solubility of C a ( O H ) 2 C a ( O H ) 2 was experimentally determined to be 0.019 M. Based on this value, what is the K s p K s p of C a ( O H ) 2 C a ( O H ) 2 ?

Answers

Answer 1

Answer:

Ksp = 2.74 x 10⁻⁵

Explanation:

The solubility equilibrium for Ca(OH)₂ is the following:

  Ca(OH)₂(s) ⇄ Ca²⁺(aq) + 2 OH⁻(aq)

I                          0                0

C                       + s               + 2s

E                        s                   2s

According to the ICE table, the expression for the solubility product constant (Kps) is:

Ksp = [Ca²⁺] x ([OH⁻])² = s x (2s)² = 4s³

Then, we calculate Ksp from the solubility value (s):

s = 0.019 M

⇒ Ksp = 4s³ = 4 x (0.019)³ = 2.74 x 10⁻⁵

Answer 2

The Ksp value of Ca(OH)2 is [tex]2.74 \times 10^-^5[/tex].

What is Ksp value?

The Ksp is the solubility product constant.

The solubility equilibrium is

[tex]Ca(OH)_2(s) = Ca^2^+(aq) + 2 OH^-(aq)[/tex]

I                     0                  0

C                     s               +2s

E                     s                 2s

By the ICE table, the expression for Ksp is

[tex]\rm Ksp = [Ca^2^+] \times ([OH^-])^2 = s \times (2s)^2 = 4s^3[/tex]

Now, calculate the Ksp

s, solubility value is 0.019 M

then, [tex]\rm Ksp = 4s^3= 4 \times (0.019)^3 = 2.74 \times 10^-^5[/tex]

Thus, the Ksp value is [tex]2.74 \times 10^-^5[/tex]

Learn more about Ksp

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Related Questions

10 points
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d. none of the above

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c. arteries, veins, capillaries

Using VSEPR theory which of the following would be the correct shape for nitrogen trifluoride?

Answers

Answer:

trigonal pyramidal

Explanation:

In NF3, the nitrogen atom is sp3 hybridized. Now we must remember that according to the VSEPR theory, the number of electron pairs in the valence shell of the central atom in a molecule determines its shape.

Here, the nitrogen atom is the central atom and its outermost shell is surrounded by four electron pairs - one lone pair and three bond pairs. This means that it has a tetrahedral electron pair geometry.

However, due to the lone pair, the three fluorine atoms are arranged in a  trigonal pyramidal geometry. Hence the correct shape of the molecule is trigonal pyramidal.

0.500 L of a gas is collected at 2911 MM and 0°C. What will the volume be at STP?

Answers

Answer:

V₂ =  1.92 L

Explanation:

Given data:

Initial volume = 0.500 L

Initial pressure =2911 mmHg (2911/760 = 3.83 atm)

Initial temperature = 0 °C (0 +273 = 273 K)

Final temperature = 273 K

Final volume = ?

Final pressure = 1 atm

Solution:

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

by putting values,

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 3.83 atm × 0.500 L × 273 K / 273 K × 1 atm

V₂ = 522.795 atm .L. K / 273 K.atm

V₂ =  1.92 L

How do waves travel through space?

Answers

Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.

Explanation:

Electromagnetic waves are waves which can travel through the vacuum of outer space. Electromagnetic waves are created by the vibration of an electric charge. This vibration creates a wave which has both an electric and a magnetic component.

A 30 kg wrecking ball was dropped from different heights.



30 kg Wrecking ball

Height dropped

Speed at impact

Energy at impact

Distance Object is moved

Trial 1

5m

9.9 m/s

1470 J

0 cm

Trial 2

7m

11.71 m/s

2058 J

3 cm

Trial 3

15m

17.15 m/s

4410 J

55 cm

Trial 4

25m

22.14 m/s

7350 J

120 cm



What is the relationship between drop height and energy at impact?

Answers

Ahhh I don’t know I’m sorry

Why do atoms become larger as you move down a group?
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O Electron shielding increases.
O The decrease in ionization energy.
O The mass of the atom increases.

Answers

Explanation:

option C is the correct answer of this question

12. Study the chemical reaction below, what are the product(s) in the reaction and what are the reactant(s) in the reaction (Short answer)

Aluminum + copper chloride ---> copper + aluminum chloride

Answers

Explanation:

The reactants are Aluminium and Copper chloride.

The products are Copper and Aluminium chloride.

x-rays had a frequency of about 3x10^18 determine it's wavelength (in nm) and energy per photon

Answers

Answer:

E = 19.89×10⁻¹⁶ J

λ = 1×10⁻¹ nm

Explanation:

Given data:

Frequency of xray = 3×10¹⁸ Hz

Wavelength of xray = ?

Energy of xray = ?

Solution:

speed of wave = wavelength × frequency

speed = 3×10⁸ m/s

3×10⁸ m/s  = λ ×3×10¹⁸ s⁻¹

λ = 3×10⁸ m/s  / 3×10¹⁸ s⁻¹

λ = 1×10⁻¹⁰m

m to nm:

λ = 1×10⁻¹⁰m×10⁹

λ = 1×10⁻¹ nm

Energy of x-ray:

E = h.f

h = plancks constant = 6.63×10⁻³⁴ Js

by putting values,

E = 6.63×10⁻³⁴ Js ×3×10¹⁸ s⁻ ¹

E = 19.89×10⁻¹⁶ J

What is happening to the total amount of water on earth?
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Answers

Answer:

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Explanation:

It stays basically the same becuase it is considered a constant

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Answers

Answer: I believe that it is that the forces are balanced.

Explanation:

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Answers

Answer:

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How does the concept of action- reaction apply to the human body?

Answers

Answer:

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Explanation:

The rule of action-reaction state that an equivalent and reverse reaction occurs with any action.  If one entity imposes force on a second entity, the second responds by exerting an equivalent force on first entity in the same direction. 

What is the electron configuration for Ti (titanium)?

Answers

Explanation:

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To write the electronic configuration of an element, we must know the number of electrons in them;

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Explanation:

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Answers

Answer:

The recessive allele tends to be masked when it's in the presence of the dominant allele.

Explanation:

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explain faraday's law

Answers

Explanation:

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All of the following are alkaline earth metals except.
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Answers

The answer is
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Answers

Answer:

an increase of acceleration or decrease of acceleration

Explanation:

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Answers

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We have a photon with the wavelength of 605 nm. What is the frequency of this
photon?

Answers

Answer:

Explanation:

Speed of light = Wavelength x Frequency.

605 nm x Frequency = 3x10^8 m/s

6.05 x 10^-7 m x Frequency = 3x10^8 m/s

Frequency = 4.96 x 10^14 Hz

Answer:

ν=4.96x10^14 Hz

Explanation:

c=λν

λ=wavelength

ν=frequency

in this problem:

c=3x10^8

λ=605x10^-9

so ν=c/λ

v=(3x10^8)/(605x10^-9)

v=4.96x10^14

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Which of these questions is testable in a scientific investigation?
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C.Is science a better
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D.Does a red rose smell better than a pink rose?

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Answer:

A

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Answer:

A

Explanation:

Drag the tiles to the correct boxes to complete the pairs.
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Answers

Answer:

See below!

Explanation:

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A duplication is when a gene is duplicated.

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An insertion is when nucleotide bases are inserted into a gene.

Substitution  ⇒  CGAT = CTAT

A substitution is when part of a gene is replaced with a different base pair.

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Answers

Multiply 2 * 21

2 * 21
= 42

The function of a specific enzyme is mostly determined by its

Answers

Answer:

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Explanation:

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Answers

Answer:

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Answers

Answer:

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give me brainly

Can I have an answer for this?

Answers

Hey There!_____________________________________Answer:[tex]\huge\boxed{\text{11.25 grams/mols}}[/tex]_____________________________________Reaction:[tex]2Al_{(s)}+ 3FeO_{(s)} \overset{\Delta} {\Longrightarrow} 3Fe_{(s)}+Al_2O_3_{(s)}[/tex]_____________________________________DATA:

Mass of Aluminium: 27 [tex]\frac{gm}{mol}[/tex]

Mass of Ferous Oxide: 71.84 [tex]\frac{gm}{mol}[/tex]

Aluminium: 7.5 Moles Given

How many moles of Iron (II) oxide(FeO)?

_____________________________________SOLUTION:

As there are 2 moles of aluminium involved and 3 moles of ferrous oxide So,

2 moles Al and 3 moles FeO

7.5 moles Al and x moles FeO

For X moles:

X = [tex]\frac{3\ x\ 7.5 }{2}[/tex]

X= [tex]\frac{22.5}{2}[/tex]

X= 11.25 [tex]\frac{gm}{mol}[/tex]

_____________________________________Best Regards,'Borz'

A saturated aqueous solution of sucrose contains 200 grams of sucrose and 100 grams of water. Which is the solvent: sucrose or water?

Answers

Answer:

The solvent is water

Explanation:

The solvent is the substance in the mixture that is able to dissolve the other substances. The solvent is usually the liquid.

In the problem is said: "A saturated aqueous solution", that means the solution is made by a solute that is in excess (Sucrose) dissolved in the solvent (Water).

The solvent is water

What kind of bonding would exist between
sulfur and hydrogen?

Answers

Answer:

nonpolar covalent

Explanation:

Comparing their electronegativities will help determine the type of bond. Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. The difference in electronegativity (ΔEN)  is used to determine bond type. Hydrogen has an electronegativity of 2.20 and sulfur has 2.58. The difference is 0.38,so the electrons are shared in a nonpolar covalent bond.

Explain Nuclear Fusion vs Gravity a.Gravity pushes outward and Nuclear fusion pushes inward. b.Both gravity and nuclear fusion push inward. c.Both gravity and nuclear fusion push outward. d.Nuclear fusion pushes outward, and gravity pushes inward.

Answers

Answer:

d.

Explanation:

The term known as "Nuclear Fusion" is a very important concept in chemistry and it is studied mostly under the topic or aspect of Chemistry known as or called radioactivity. Nuclear Fusion is the kind of reaction in which two or more atomic nucleus combines to for bigger ones.

There is a saying that there is no life without nuclear fusion because it is the reaction that causes the stars to have light.

Option 'd' is correct. This is what happens in stars in order for light to be produced that is the inward movement of gravity and the outward movement of nuclear fusion.

How many moles are in 7.18x10^24 ions of mg

Answers

Answer:

11.93 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{7.18 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 11.92691...[/tex]

We have the final answer as

11.93 moles

Hope this helps you

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