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3 years ago

For which compound is the process of dissolving in water exothermic?

Chemistry

1 answer:

Leokris [45]3 years ago

8 0

Answer: Option (2) is the correct answer.

Explanation:

A chemical reaction in which reactants absorb energy is known as an endothermic reaction. Also, in this reaction energy of reactants is less than the energy of products.

For example, when ammonium chloride is dissolved in water then the solution becomes cold as the reaction is endothermic in nature.

Whereas a chemical reaction in which energy is released is known as exothermic reaction. Also, in this type of reactions energy of reactants is more than the energy of products.

For example, when NaOH is dissolve in water then heat is released as it dissociates into sodium and hydroxide ions. Further, product formed that is, species sodium and hydroxide ions acquire low energy state. Hence, the reaction is exothermic in nature.

Thus, we can conclude that NaOH is the compound in which process of dissolving in water is exothermic.

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Generally, when going down a group on the periodic table:

antiseptic1488 [7]

The correct answer is ionic radii increase.

The ionic radii decrease as one move across the periodic table, that is, from left to right, while the ionic radius increases as one move from top to bottom on the periodic table. As one moves down a group in the periodic table, the supplementary layers of electrons are being added that usually results in the increase of the ionic radius as one moves down the periodic table.

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3 years ago

Describe one way the respiratory and nervous system work together

DiKsa [7]

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The respiratory system supplies oxygen to the blood and removes carbon dioxide. The brain monitors respiratory volume and blood gas levels. The brain regulates respiratory rate.

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2 years ago

How many moles is 2. 2 grams of CO2?.

lorasvet [3.4K]

The number of moles of carbon dioxide is 0.05 mol.

A molecule of CO2 contains one carbon atom and two oxygen atoms. One mole of CO2 contains one mole of carbon atoms and two moles of oxygen atoms. The mass of one atomic mole of an element equals the atomic mass in grams, and the molecular mass of an element or compound equals the sum of the atomic masses of each type of its constituent atoms.

Therefore, the mass of one mole of a molecule of an element or compound equals its molecular weight in grams. The number of grams in moles depends on the substance you have. To calculate it, find the atomic or molecular mass of the substance and multiply it by the number of moles.

Learn more about Carbon dioxide here:-brainly.com/question/25385913

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2 years ago

According to the fossil record found in these sedimentary layers, what conclusion can be drawn about the movement of life to lan

Andrei [34K]

A conclusion that can be drawn about the movement of life to land is that;

B.) As land plants became more complex, animal life did as well.

The plants have also adapted to reduce the water loss across cell walls. This is made possible by waxy cuticles.

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3 years ago

Read 2 more answers

How many monochlorination products can be formed (constitutional isomers only) from the reaction of (CH3)2CHCH2CH3 with Cl2 and

faltersainse [42]

Answer:

4 monochlorination products can be formed.

Explanation:

Constitutional isomers : These are those compounds with same molecular formula but different atomic arrangement.For example: butane and 2-methly-propane.

On monochlorination of 2 methyl-butane we will have four possibilities of product which will be constitutional isomers of each other:

1-chloro-3-methyl butane : $(CH_3)_2CH-CH_2-CH_2-Cl$

2-chloro-3-methyl butane : $(CH_3)_2CH-CHCl-CH_3$

2-chloro-2-methyl butane $(CH_3)_2CCl-CH_2-CH_3$
1-chloro-2-methyl butane $(CH_2Cl)_2CH-CH_2-CH_3$

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3 years ago