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sveta [45]
3 years ago
10

Explain why the process of dissolution can be exothermic or endothermic (heat of solution) with different solutes

Chemistry
1 answer:
RUDIKE [14]3 years ago
4 0

Answer:

The process of dissolving is exothermic when more energy is released when water molecules “bond” to the solute than is used to pull the solute apart. Because more energy is released than is used, the molecules of the solution move faster, making the temperature increase.

Project the image Endothermic Dissolving.

The process of dissolving is endothermic when less energy is released when water molecules “bond” to the solute than is used to pull the solute apart. Because less energy is released than is used, the molecules of the solution move more slowly, making the temperature decrease.

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A: mouth. Chemical digestion begins in the mouth when enzymes in saliva begin to break down carbohydrates. Most chemical changes in digestion occur in the small intestine. Large molecules of food are broken down into smaller molecules that can be absorbed by our cells.
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3 years ago
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A solution of hydrocloric acid has a molarity of 2.25 M HCl. If a reaction requires 5.80 g of HCI, what
Natali [406]

Answer:

0.071L

Explanation:

From the question given, we obtained the following data:

Molarity of HCl = 2.25 M

Mass of HCl = 5.80g

Molar Mass of HCl = 36.45g/mol

Number of mole of HCl =?

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Volume = 0.071L

4 0
4 years ago
Calculate the concentration of a 35.24ml Ca(OH)₂ Solution If 28.35ml of 1.21m HNO3 is needed to tritate
olya-2409 [2.1K]

Answer:

Ca(PH)3

Explanation:

5 0
3 years ago
 how do electrons behave when metals react with non-metals
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Most often, electrons are transferred from the metal atoms to the nonmetal atoms. Some other reactions are possible, such as the reaction between some metal cations and compounds of nonmetals, such as carbon monoxide, to form coordinate covalent bonds. 
4 0
4 years ago
Determine whether a solution of the compound given will rotate light when subjected to polarimetry. Is a solution of compound A
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Answer:

The question is incomplete. the compound wasn't attached to the question. Find attached of the compound and the answer too.

1. No

2. No

3. Yes

4. Yes

Explanation:

See the attached file for the answer.

7 0
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