An Arrhenius base yields which ion as the only negative ion in an aqueous solution

Answers

Answer 1

Answer: The answer is most likely hydroxide.

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Which statement describes the particles of an ideal gas based on the kinetic molecular theory?(1) The gas particles are relatively far apart and have negligible volume.
(2) The gas particles are in constant, nonlinear motion.
(3) The gas particles have attractive forces between them.
(4) The gas particles have collisions without transferring energy.

Answers

$\boxed{\left( {\text{1}} \right){\text{ The gas particles are relatively far apart and have negligible volume}}}$ is the correct statement that describes the particles of an ideal gas on the basis of kinetic molecular theory.

Further Explanation:

Kinetic theory of gases

It defines gas to be considered as a large number of particles. These particles move randomly in all directions. It explains the macroscopic properties of gases by considering their molecular composition and motion.

Postulates:

(a) The gas molecules are very small and are located far apart from each other. Most of the volume occupied by the gas is an empty space.

(b). The molecules of the gas are in rapid random motion. These can move in all directions.

(c). The gas molecules undergo collisions with each other and with the walls of the container. The collisions between molecules and container walls are responsible for the pressure of the gas.

(d). There is no loss of kinetic energy when gas molecules collide so their collisions are known as perfectly elastic.

(e). No interaction occurs between different gas particles during collisions.

(1) The gas particles are relatively far apart and have negligible volume.

The size of gas particles is very small and therefore these have negligible volume. Moreover, these molecules are far away from each other.

(2) The gas particles are in constant, nonlinear motion.

The motion of the gas particles occurs randomly in all directions so they can not be in constant, nonlinear motion.

(3) The gas particles have attractive forces between them.

The particles of gas have no interaction with each other. So no attractive forces are present between them.

(4) The gas particles have collisions without transferring energy.

The collisions of gas molecules are considered to be perfectly elastic. So the total energy of the system remains constant. It neither increases nor decreases.

Therefore the correct statement is (1).

Learn more:

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Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ideal gas equation

Keywords: kinetic theory of gases, collisions, energy, constant, attractive forces, particles, molecules, volume, random motion, perfectly elastic, negligible.

Answer:

(1) The gas particles are relatively far apart and have negligible volume

Explanation:

The Kinetic Molecular Theory was formulated to explain the behaviour of ideal gases. The main postulates of the theory are:

-The volume occupied by the gases is negligible when compared to the distance between them

- They do not experience any intermolecular forces of attraction or repulsion

-The collision between gas particles is completely elastic

-The gas particles are in constant random motion

Therefore the first statement which suggests that the gas particles are relatively far apart and have negligible volume is in accordance with the theory

Colligative properties area. chemical properties.
b. physical properties.
c. biological properties.
d. none of these

Answers

B. Physical Properties

What kind of elements form covalent bonds?

Answers

Answer:

The correct answer is non-metals.

Explanation:

In the covalent bond, the two non-metallic atoms share one or more electrons, i.e., they bind through their electrons in the last orbital. Covalent bonds normally occur between atoms with similar and elevated electronegativity, from which removing the electron completely requires a lot of energy.

Have a nice day!

Covalent bonds form when electrons are shared between two nonmetals

26 Which substance is an electrolyte?(1) C6H12O6(s) (3) NaOH(s)(2) C2H5OH(L) (4) H2(g)

Answers

Answer: Option (3) is the correct answer.

Explanation:

When a compound dissolved in solution dissociates into ions then the solution is able to conduct electricity is known as an electrolyte.

This means that ionic molecules are able to conduct electricity because they are able to dissociate into ions.

Thus, we can see that out of the given options NaOH is ionic in nature hence, it is an electrolyte.

Whereas $C_(6)H_(12)O_(6)$ , $C_(2)H_(5)OH$ , and $H_(2)$ are not ionic in nature therefore, they are not electrolyte.

Final answer:

An electrolyte is a substance that produces an electrically conducting solution when dissolved in water. Electrolytes are typically salts that dissociate into ions. Out of the given options, NaOH is an electrolyte as it can dissociate into Na+ and OH- ions. The correct option is 3.

Explanation:

An electrolyte is a substance that produces an electrically conducting solution when dissolved in a polar solvent, such as water. It is typically formed when a salt dissociates into its component ions.

The free ions in the solution interact with the polar solvent (water), allowing the solution to conduct an electric current. In the options given, NaOH(option 3) is considered an electrolyte as it can dissociate into Na+ and OH- ions, thereby allowing the solution to conduct electricity.The correct option is 3.

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Which of the following reactions show a decrease in entropy? a. CaO(s) + H2O(l) Ca(OH)2 (s) b. 2H2O (l) 2 H2 (g) + O2 (g) c. H2CO3 (aq) CO2 (g) + H2O (l) d. 2KClO3 (s) 3O2 (g) + 2KCl (s)

Answers

The correct answer is a. CaO(s) + H2O(l) Ca(OH)2 (s)
Decreasing in entropy means that you have to get a solid from the liquid
therefore : CaO(s) + H2O(l) Ca(OH)2 (s)
This formula will make it absolutely clear
$(g) -\ \textgreater \ (l) -\ \textgreater \ (s) more molecules -\ \textgreater \ less molecules$

Answer: The correct answer is Option a.

Explanation:

Entropy is defined as the measurement of randomness in a system.

Entropy increases as we move from solid state to liquid state to gaseous state and it decreases as we move from gaseous state to liquid state to solid state.

From the options above:

Option a: $CaO(s)+H_2O(l)\rightarrow Ca(OH)_2(s)$

Entropy is getting decreased because liquid reactants are changing its state to solid state.

Option b: $2H_2O(l)\rightarrow 2H_2(g)+O_2(g)$

In this reaction, entropy is increasing because the state is changing from liquid to gaseous state.

Option c: $H_2CO_3(aq.)\rightarrow CO_2(g)+H_2O(l)$

In this reaction, entropy is increasing because the state is changing from liquid to gaseous state.

Option d: $2KClO_3(s)\rightarrow 3O_2(g)+2KCl(s)$

In this reaction, entropy is increasing because the state is changing from solid to gaseous state.

Hence, the correct answer is Option a.

Which of the following types of organelles are most important in providing a cell with energy

Answers

Mitochondria are the most important because they released the energy stored in food

I hope that's help you !

Final answer:

Mitochondria are the organelles that provide a cell with energy through ATP production via cellular respiration.

Explanation:

The organelles that are most important in providing a cell with energy are the mitochondria.

Within the mitochondria, ATP (adenosine triphosphate) is produced, which is the energy currency of the cell.

By undergoing cellular respiration, mitochondria produce ATP through oxidative phosphorylation, generating energy for various cellular processes.

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