Answer: The solubility of this compound in pure water is 0.012 M
Explanation:
Solubility product is defined as the equilibrium constant in which a solid ionic compound is dissolved to produce its ions in solution. It is represented as [tex]K_{sp}[/tex]
The equation for the ionization of the is given as:
[tex]Ca(OH)_2\rightarrow Ca^{2+}+2OH^-[/tex]
By stoichiometry of the reaction:
1 mole of [tex]Ca(OH)_2[/tex] gives 1 mole of [tex]Ca^{2+}[/tex] and 2 mole of [tex]OH^-[/tex]
When the solubility of [tex]Ca(OH)_2[/tex] is S moles/liter, then the solubility of [tex]Ca^{2+}[/tex] will be S moles\liter and solubility of [tex]OH^-[/tex] will be 2S moles/liter.
[tex]K_{sp}=[Ca^{2+}][OH^{-}]^2[/tex]
[tex]6.5\times 10^{-6}=[S][2S]^2[/tex]
[tex]S=0.012M[/tex]
Thus solubility of this compound in pure water is 0.012 M
Which substance is an Arrhenius acid?
A) HBr
B) NaBr
C) NaOH
D) NH3
Answer:
A
Explanation:
Answer:a
Explanation:
Which of these counts as a single electron domain?
(Select ALL answers that apply)
a single bond to an atom
a double bond to an atom
a triple bond to an atom
a lone pair
Answer:
double bond to an atom
a lone pair
a single bond to an atom
Explanation:
What is tugror pressure ,what causes it,and what does it do for a plant?
Answer:
Explanation:
Turgor pressure is the pressure forced or in other words, exerted onto the cell wall of the plant. It's caused by the movement of water into the cell. This causes the water to rush and burst into the cell, which increases the pressure onto the cell wall. Due to that, cell swells up, which helping the plant to stand upright and straight.
Hope this helps
Answer:
Turgor pressure is the pressure exerted on the cell wall of a plant. It is caused by the movement of water into the cell. ... This causes water to rush into the cell, increasing the pressure on the cell wall. The cell swells up, helping the plant to stand upright.
When salt dissolves in water:
A. intermolecular forces in the solute are broken and new ion-dipole forces in the solution are formed
B. ionic bonds in the solute are broken and new intermolecular forces in the solution are formed intermolecular forces in the solute are broken and new intermolecular forces in the solution are formed
C. ion-dipole forces in the solute are broken and new ion-dipole forces in the solution are formed
D. ionic bonds in the solute are broken and new ionic bonds in the solution are formed
E. ionic bonds in the solute are broken and new ion-dipole forces in the solution are formed
F. ion-dipole forces in the solute are broken and new intermolecular forces in the solution are formed
G. intermolecular forces in the solute are broken and new ionic bonds in the solution are formed
H. ion-dipole forces in the solute are broken and new ionic bonds in the solution are formed
Answer:
ionic bonds in the solute are broken and new ion-dipose forces in the solution are formed
Explanation:
How many atoms are in 9.6 moles of
aluminum (AI)?
If a 28.0 L balloon with a temperature of
25 °C is cooled in a refrigerator, what will
be the volume of the balloon be when it
reaches 5 °C?
Answer:
5.6 L
Explanation:
We can apply Charles' Law here since our pressure is constant (will not change inside the refrigerator) and we are relating change in volume with change in temperature:
V₁ / T₁ = V₂ / T₂ where V₁ and T₁ are initial volume and temperature, and V₂ and T₂ are final volume and temperature. Let's plug in what we know and solve for the unknown:
28.0 L / 25 °C = V₂ / 5 °C => V₂ = 5.6 L
5.6 L is our new volume (at 5 °C).
Drought is a weather condition. true or false
Answer:
true
Explanation:
drought is a period of unusually persistent dry weather that persists long enough to cause serious problems such as crop damage and/or water supply shortages. The severity of the drought depends upon the degree of moisture deficiency, the duration, and the size of the affected area.
2. What element is found in compounds that control all chemical changes in your body?
Answer:
???????
Explanation:
How many atoms are in 1.00 moles of Calcium (Ca)?
Answer:
One mole is equal to 6.02214179×1023 atoms, or other elementary units such as molecules.
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore number of atoms in 1.00 moles of Calcium (Ca) are 6.022×10²³ atoms.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. Mole is inversely proportional to molar mass.
Mathematically,
mole =given mass ÷ molar mass
Number of atoms = moles ×6.022×10²³ atoms
Substituting the values in above formula we get
Number of atoms = 1 ×6.022×10²³ atoms
Number of atoms 1 mole of calcium = 6.022×10²³ atoms
Therefore, number of atoms in 1.00 moles of Calcium (Ca) are 6.022×10²³ atoms.
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Name the salt produced if sodium carbonate reacts with dilute nitric acid ? Write the equation.
Answer:
2HNO3 +Na2CO3 → CO2 + H2O + 2NaNO3
Answer:
Na2CO3 + 2HNO3 → 2NaNO3 + CO2 + H2O
End product is Sodium Nitrate in solution, plus plenty of carbon dioxide gas bubbles and water.
Brainliest pweasee if I could help you! <3
The gills, Y, of a fish are usually near external openings that allow water
to flow in and out of them. They also usually have many folds, which
increases their surface area. Using the diagram and this information, how
have gills most likely allowed fish to adapt to living underwater?
A.
They allow the fish to easily take in dissolved oxygen
B.
They allow the fish to filter food from the water
C.
They allow the fish to filter carbon dioxide out of the water
D.
They allow the fish to sense predators
The speed of sound in air is four times as its speed in steel true or false?
Answer:
.....false
Explanation:
the particles in the air are packed apart whereas the particles in steel are closely packed and sound travel faster in solids than in gasses..
Answer:
False
Explanation:
The speed of sound is quickest in mediums that have their molecules close apart. The speed of sounds is quickest in solids, followed by liquids, and slowest in gasses. The close the molecules are together, the quicker sound travels. The sound would travel faster in the steel than in the air.
This is due to the fact that sound waves are compression waves. This means that they rely on the way molecules collide with one another and act sort of like a spring.
Fun fact: In the old days, people used to put their ears to the train tracks to see if a train is coming. Sound moves so fast in metal that they can sense the vibrations miles before the train arrived.
Please mark this as brainliest if this helped you!
What is the volume of 11 moles of N2 at STP?
What products do not contain endocrine disruptors
Answer:
pesticides.
Explanation:
endocrine disruptors are found in many every day products including some plastic bottles and contains liner or metal food
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In a lab, students measured the mass of an unknown metal to be 46.4g The metal sample releases 769 J when it is cooled from 101.0°C to 30.00 "C, the
meal is most likely?
Lead
Copper
Mercury
Silver
Please help nowwww its important
Answer:
i think you're right
Explanation:
Answer:
It looks right
Explanation:
The graph goes right over August
the formula equation of Sodium carbonate + hydrochloric acid
→ sodium chloride + carbon dioxide + water
Answer:
the reaction is: Na2CO3 + 2HCl ===》 2NaCl + H2O + CO2(g)
A neutralization reaction occurs between sodium hydroxide and sulfurous acid. Complete the equation below for the neutralization reaction that ocurs during the titration
Answer:
2NaOH + H₂SO₃ → 2H₂O + Na₂SO₃
Explanation:
When a base as sodium hydroxide (NaOH) reacts with an acid as sulfurous acid (H₂SO₃), the H⁺ of the acid will produce with the OH⁻ of the base H₂O. Te complementary ions will produce the respective salt (Na₂SO₃):
NaOH + H₂SO₃ → H₂O + Na₂SO₃
To balance the sodiums:
2NaOH + H₂SO₃ → H₂O + Na₂SO₃
And the hydrogens:
2NaOH + H₂SO₃ → 2H₂O + Na₂SO₃And this is the complete reaction for this neutralization reaction.
What is the final temperature of a system if 10.0 grams of cold water, originally at 10°C is mixed with 120.0 grams of hot water, originally at 77.0°C?
A. 83.1°C
B. 100.0°C
C. 71.8 °C
D. 95.1°C
which deflects winds to the right or left
Answer:
right
Explanation:
the air that circulates to the right is deflected, because of the earths gravitational rotation, and how its tilted.
Why might the ability to produce three-dimensional images of organs be helpful in diagnosing a patient's ailment?
Answer:
Explanation: The body is largely composed of water molecules. Each water molecule has two hydrogen nuclei or protons. MRI takes advantage of the high prevalence of hydrogen in the body and the magnetic properties of the proton in a hydrogen atom. Hydrogen atoms induce a small magnetic field due to the spin of this atom's proton.
Which of the following statements explains which trial has a lower concentration of the reactant? (5 points) Trial 1, because the average rate of the reaction is lower. Trial 1, because this reaction lasted for a longer duration than Trial 2. Trial 2, because this reaction was initially fast and later slowed down. Trial 2, because the v
Answer:
A)Trial 1 because the average rate of reaction is lower.
Explanation:
I accidentally gave myself low rating my bad
The statement that best explain which trial has a lower concentration of the reactants is Trial 1, because this reaction lasted for a longer duration than Trial 2.
What is a Chemical reaction?Chemical reaction refers to reaction that take place between reacting substances in which the chemical substances are transformed to products.
When the concentration of the reactants increases, more molecules tend to interact with each other in order to form new compounds, and the rate of reaction increases. When the concentration of the reactants reduces, there are little of that molecule present, and the rate of reaction decreases
Therefore, The statement that best explain which trial has a lower concentration of the reactants is Trial 1, because this reaction lasted for a longer duration than Trial 2.
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How many moles of calcium nitrate would react with 4.55 moles of chromium (III) sulfate to produce calcium sulfate and chromium(III) nitrate?
Answer:
13.65 moles
Explanation:
The equation of the reaction is;
3Ca(NO3)2 + Cr2(SO4)3 = 3Ca(SO4) + 2 Cr(NO3)3
4.55 moles of chromium (iii) sulfate reacts with calcium nitrate
The mole ratio of Chromium (iii) sulfate to calcium nitrate is 1: 3
Therefore; the moles of calcium nitrate will be given by
= (4.55/ 1)×3
= 13.65 moles
Hence; 13.65 moles of calcium nitrate would react with 4.55 moles of Chromium (iii) sulfate.
Anyone know the answer to this?
What type of product is formed when acids are added to some ionic compounds
Answer:
salt
Explanation:
When acid and base solutions react, they produce water and a neutral ionic compound called a salt.
An -ate or -ite at the end of a compound name usually indicates that the compound contains *
fewer electrons than protons.
neutral molecules.
only two elements.
a polyatomic anion.
Explanation:
1.-Ate-contains 3 elements in which one is oxygen2.-ite-contains 3 elements in which one is Oxygen but the oxygen is less than that of -Ate3.-ide has 2 elementsCells need a structure to separate their genetic material from the rest of the cell. This structure is the
cell membrane.
vacuole
cytoplasm
nucleus.
Answer: Nucleus
Explanation: It is the nucleus because the nulceus holds the chromosomes of the cell.
Which salt is most soluble at 10°C?
Answer:
KI
Explanation:
Which is the correct Lewis structure for carbon monoxide?
A.
A
B.
B
C.
C
D.
D
What type of friction acts on a person who is sledding down a hill? Neglect air resistance. *
static
sliding
rolling
fluid
sliding
This is the answer