Chemistry High School

What is the enthaply of dissolution? ​

What Is The Enthaply Of Dissolution?

Answers

Answer 1

Answer:

The enthalpy change of solution refers to the amount of heat that is released or absorbed during the dissolving process (at constant pressure).

Explanation:

Answer 2
The enthalpy of solution, enthalpy of dissolution, or heat of solution is the enthalpy change associated with the dissolution of a substance in a solvent at constant pressure resulting in infinite dilution.
The enthalpy of solution is most often expressed in kJ/mol at constant temperature. The energy change can be regarded as being made of three parts, the endothermic breaking of bonds within the solute and within the solvent, and the formation of attractions between the solute and the solvent. An ideal solution has a null enthalpy of mixing. For a non-ideal solution it is an excess molar quantity.

Related Questions

which best represents a compound?

Answers

Answer:

The one above B

Explanation:

The one above B is most represents a compound because compounds are chemically bonded and are always near each other.

Colour in acid of red litmus paper​

Answers

Red

Litmus paper turn red when it comes in contact with acid. It turn blue if it come in contact with a base. Neutral litmus paper is purple

The radioactive isotope used in the dating of fossils thought to be less than 40,000 years old is ________________.

Fill in the blank.

Answers

Answer:

The answer is Radiocarbon

The difference between the boiling point of a pure solvent and the boiling point of a solution of a nonelectrolyte in the same solvent is called the ___________________, a colligative property.

A. boiling-point elevation
B. freezing-point depression
C. molar freezing-point constant
D. molal melting-point constant
E. molal boiling-point constant

Answers

Answer: A) Boiling-Point Elevation

There are 70 fisherman and 5 sea bass in the lake. Are sea bass considered a limiting factor?

Answers

Answer:

yes

Explanation:

A candy bar has ____ energy.

A. Kinetic

B. Potential

Answers

Answer:

Potential energy

Explanation:

A candy bar has carbs, sugars, and calories which are potentially going to be used as energy in a body.  

Answer:

B. Potential

Explanation:

Because the candy bar is sitting still.

What type of bond (Ionic, Covalent or Metallic) would be created when carbon bonds with bromine?

Answers

Answer:

Covalent bond

Explanation:

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Li and S - covalent or ionic bond?

Answers

Answer:

It is an ionic bond.

Explanation:

Ionic bonds occur when a metal and a nonmetal combine, while covalent bonds occur between two nonmetals. Lithium is a metal and sulfur is a nonmetal.

It’s a ionic bond I believe. We just learned about this in school

Which is NOT a shape of epithelial cells?
A.Cuboidal
B.Columbar
C.circular
D.squamous

Answers

B.should be *columnar, but C.Circular is the answer

what form of heat transfer makes warm air rise?

Answers

Convection which allows heat to be transferred between the air molecule via convection currents .

Which of the following might be included in a chemical
reaction?



a Molecules
b lons
C Pure elements
d All of the above

Answers

Answer:

D. All of the above

Explanation:

Molecules, ions, and pure elements might be included in a chemical reaction. Therefore, option (d) is correct.

What is a chemical reaction?

A chemical reaction can be described as a reaction that brings the chemical conversion of one chemical substance to another chemical substance. The reactions cause chemical changes that include the rearrangement of electrons in order to create and break bonds between atoms.

The compound or molecules which are primarily utilized in a reaction are called reactants. Chemical reactions give products, which possess characteristics different from the reactants of the reaction.

Chemical reactions take place at a definite rate of reaction at a given concentration, temperature, and pressure. The rate of reaction increases with the rising temperature of the reaction as more activation energy is available for reactant molcules collisions.

Therefore, in a chemical reaction reactants and products can be present as Molecules, ions, and pure elements.

Learn more about Chemical reactions, here:

brainly.com/question/22817140

#SPJ2

This is a change in an objects motion caused by an unbalanced force

Answers

Answer:

This is a change in an objects motion caused by an unbalanced force.

- Acceleration

Answer:

Pressure

Pressure is done when a force is applied to an object to course a motion

There is free rotation about the carbons of ethane but not th
of ethane. This is due to the fact that
A. the carbons in ethane are round
Balkenes do not rotate
C. the carbons in ethane are linked by double bonds
D. the carbon in ethane are smaller than those of ethane​

Answers

Answer:

C. the carbons in ethene are linked by double bonds

Explanation:

The reason for the lack of free rotation about the carbons of ethene is that they are linked with with double bonds.

In single bonds afforded with the ethane compound, there is free rotation.

The double bonds confer a special restriction on the rotational potential of the bonded atoms round the carbon.

Are ionic compounds not carrying a charge?​

Answers

Answer:

yes they carry charges

A motorcycle starts at rest and moves a distance of 460m .
If it has constant acceleration of 4m55 m/s2 what is its final velocity

Answers

Answer:

The final velocity of the motorcycle is 64.7 m/s

Note: Since the value for the acceleration of the motorcycle is not clear, it is assumed to be 4.55 m/s² in the calculation

Explanation:

Using the equation of motion that contains all the given values in the question: v² = u² + 2as

where v is final velocity; u is initial velocity; a is acceleration; s is horizontal distance

v = ?, u = 0 (since the motorcycle starts from rest), a = 4.55 m/s², s = 460 m

v² = 0² + 2 * 4.55 * 460

v² = 4186

take square root of both sides

v = 64.7 m/s

Therefore, the final velocity of the motorcycle is 64.7 m/s

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(picture included with one question ^^^^^^^)

Answers

Answer:

type D

balance form .b

Explanation:

Learning Task No. 3: Write a short paragraph regarding the differences between
saturated and unsaturated solutions.
Type of Solution
Explanations about the differences of
the two solutions
Saturated solution
Unsaturated solution​

Answers

Answer:

See explanation

Explanation:

A saturated solution is a solution that contains just as much solute as it can normally hold at a given temperature in the presence of undissolved solute. An unsaturated solution contains less solute than it can normally hold at a given temperature. A saturated solution can not dissolve more solute whereas an unsaturated solution can comfortably dissolve more solute until it attains saturation at a specified temperature.

What will most likely happen if you place a piece of metal in a base?
O A. The metal will turn into a salt.
O B. The metal will neutralize the base.
C. The metal will give off a gas.
O D. The metal will not react with the base.

Answers

Answer:D

Explanation:

The metal will not react


The rate of change of position (or distance traveled) with respect to time"

Answers

Answer:

Velocity...I believe

Answer: velocity or meters per second

Explanation:

Which gas sample contains the most molecules ?

Answers

Answer:

CO2

Explanation:

(a) CO2; according to Avogadro's Hypothesis, they all contain the same number of particles, therefore, the heaviest molecule, CO2 (molar mass = 44), will have the greatest mass. (b) all the same; at the same temperature all gases have the same kinetic energy.

. The model shows Earth in several positions relative to the Sun. In which position is it winter in North America?​

Answers

What does the model look like
all the way to the right

7th grade help me plzzzzzzzzzz

Answers

The first choice is correct
density is mass divided by volume

Can y’all give me 5 facts about this

Answers

Conglomerate is closely related to sandstone and displays many of the same types of sedimentary structures. Sandstone is a notably popular building material, used for things like flagstones and tile.

Conglomerate rocks are colorful and attractive; however, it is rarely used as ornamental stone for interior use because of its unreliable physical strength and durability.

Conglomerate has very few commercial uses, though it can be crushed to make a fine aggregate that can be used when a low-performance material is needed.

Conglomerate forms where sediments of rounded clasts at least two millimeters in diameter accumulate. Because of the large size of the clasts, it takes a very strong water current to transport and shape the rocks. As they tumble through the running water or moving waves, they form their rounded shape.

These rocks can be found in sedimentary rock sequences of all ages. They probably make up less than one percent by weight of all sedimentary rocks.

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Answers

I’m don’t kill me if I’m wrong but I think it’s high melting point

Answer:

high melting point

Explanation:

high melting point

Salt is a common example of a(n) _____________ bond, while Water is a common example of a(n) _____________ bond.

Answers

Ionic bond
Covalent bonds

Answer:

salt is ionic bond and water is Polar covalent bond

Explanation:

what is the electron configuration for lithium​

Answers

Answer:

2,1

Explanation:

the electron configuration is 2s1

Match each term with the correct description below.
1. what is a charged atom that has gained one or more electrons?

2. What substance is held together by ionic bonds?

3. What metal and nonmetal transferrers electrons?

4. What particle has electrons that are shared unequally?

5. What forms when atoms share electrons by covalent bonds?

6. What two nonmetals share electrons?

7. What charge atom that has lost one or more electrons?

8. What two or metals "pooling" electrons?

a. metallic bond

b. covalent bond

c. anion

d. ionic bond

e. molecule

f. cation

g. compound

h. polar molecule

Answers

Answer:

1. anion

2. compund

3. ionic bond

4. polar molecule

5. molecule

6. covalent bond

7. cation

8. metallic bond

Explanation:

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Answers

Answer:

The three parts of the cell theory are as follows: (1) All living things are made up of cells, (2) Cells are the smallest units (or most basic building blocks) of life, and (3) All cells come from preexisting cells through the process of cell division. ... Today, the cell theory is considered the foundation of biology.

Explanation:

hope this help.. brainliest???

Answer:

i wanna give brailiest to the person at the top!

Explanation:

PLEASE HELP
The Octet Rule explains why

A. Atoms form chemical bonds to create compounds
B. The electronegativity of fluorine is higher than chlorine
C. Ionic compounds have high boiling and melting points
D. Valence electrons are used in chemical bonding
E. Valence electrons are used in chemical bonding

It's not D that's all I know. Please answer with an explanation if you know.

Answers

Answer:

Explanation:

E

Which pair of elements is most likely to form an ionic compound with each other?



sulfur and carbon


barium and chlorine


oxygen and fluorine


calcium and sodium

Answers

Barium and chlorine
Other Questions
Read the passage. What is a similarity between the narrator and her best friend, Karen?Karen and I had been best friends since first grade. But I was a little jealous of her. Karen always seemed smarter and prettier than everyone. One day, we both put our names in for a dance contest. I practiced hard for weeks. I wanted to win the dance contest and beat Karen. On the day of the contest, I went on stage. I danced like Id never danced in my life. The crowd clapped loudly. Then it was Karens turn. She missed some steps and even lost her balance at one point. I knew something was wrongKaren was no klutz. I ended up winning the contest, but that didnt even matter to me anymore. After the contest, I ran to Karen and asked her what was wrong. Karen told me that she had been dancing with a sprained ankle. I asked her why she did it. Karen looked ashamed. Then she said, Because I wanted to beat you and prove that Im just as good as you! I was shocked. Here I was so jealous of her, and she wanted to beat me so badly that she went on stage with a sprained ankle!A. Karen and the narrator both enter the contest for fun.B. Karen and the narrator both deal with jealousy.C. Karen and the narrator are both trained dancers.D. Karen and the narrator both have sprained ankles.E. Karen and the narrator are both tennis champions. Which of the following would best complete the diagram?A. Kentucky-Virginia ResolutionsB. U.S. ConstitutionC. Alien & Sedition ActsD. Declaration of Independence Work out the length x pls Why Did Racial Violence Erupt in the 1920s? 7 Given: -8(w + 1) = -5(w + 10); Prove: w = 14Statements how did Mr sakota find out who the woman wasl? Who wrote the Canterbury Tales?A. Aquinas B. Chaucer C. Mark Twain what is (40x33)+(4)x4??Good luck When you finally go back to your old home, you find it was not the old home you missed but your childhood What do we think the author is trying to convey to his audience? A baker has three banana muffin recipes. Recipe A uses 3 bananas to make 12 muffins. Recipe B uses 5 bananas to make 24 muffins. Recipe C uses 1 banana to make 48 muffins.Order the recipes by the number of bananas per muffin from least to greatest. Which of the following describes some of the changes that occur during the second trimester of pregnancy? A. The fetus doubles in mass, and the body begins to store nutrients and minerals within its tissues. B. Cells divide into three cell layers during gastrulation, and most of the major organs become fully formed.C. The ectoderm, mesoderm, and endoderm are made, and the heart can be heard with a stethoscope. D. Bone starts to replace cartilage to form the skeleton, and the fetus begins to form and discharge urine. Katie is making a strawberry milkshake in her blender. A 0.05kg strawberry is rapidly spun around the inside of the container with a speed of 11.0 m/s, held by a centripetal force of 12.0 N. What is the radius of the blender at the strawberrys location? Round answers to two decimal places. A box with weight of magnitude F_G = 2.00 N is lowered by a rope down a smooth plane that is inclined at an angle = 30.0 degrees about ve the horizontal. The normal force acting on the box has a magnitude n = 1.73 N, the tension force is 1.00 N, and the displacement r of the box is 1.80 m down the cloned plane.What is the work W_G done on the box by the gravity? need help asap!!!!!! 7-9 validation rule in a field will Solve the inequality: -2.2p > -8.8 What is electoral college Why are new stars likely to form in irregular galaxies?A. They contain a large amount of gas and dust B. They're part of the Local GroupC. They contain many black holesD. They don't have regular shapes 50 POINTS PLS HELP!!!!Quadrilateral EFGH was dilated by a scale factor of 2 from the center (1, 0) to create E'F'G'H'. Which characteristic of dilations compares segment F'H' to segment FH? A: A segment that passes through the center of dilation in the pre-image continues to pass through the center of dilation in the image. B: A segment that does not pass through the center of dilation in the pre-image is parallel to its corresponding segment in the image. C: A segment in the image has the same length as its corresponding segment in the pre-image. D: A segment that does not pass through the center of dilation in the pre-image is perpendicular to its corresponding segment in the image. Question please help! What was the Ancient creek god Zeus sister named? Please tell me how you know I am taking a exam.