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2 years ago

1 . a chemical bond formed by the electrostatic attraction between ions covalent bond

Chemistry

1 answer:

liberstina [14]2 years ago

7 0

Explanation:

When there occurs sharing of electrons between two chemically combining atoms then it forms a covalent bond. Generally, a covalent bond is formed between two non-metals.

An ionic bond is defined as the bond formed due to transfer of one or more number of electrons from one atom to another. An ionic bond is always formed between a metal and a non-metal.

Every atom of an element will have orbitals in which electrons are found. These orbitals are known as energy level.

A molecule is defined as the smallest particle present in a substance or atom.

A metallic bond is formed due to mobile valence electrons shared by positive nuclei in a metallic crystal.

Thus, we can conclude that given statements are correctly matched as follows.

1). a chemical bond formed by the electrostatic attraction between ions - ionic bond

2). a chemical bond formed by two electrons that are shared between two atoms - covalent bond

3). the orbitals of an atom where electrons are found - energy level

4). the smallest particle of a covalently bonded substance - molecule

5). a bond characteristic of metals in which mobile valence electrons are shared among positive nuclei in the metallic crystal - metallic bond

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A The Haber process is typically carried out at a temperature of approximately 500∘C. What would happen to the rate of the forwa

Evgen [1.6K]

Answer:

(I) Decrease in temperature from 500oC to 100oC will increase the rate of the forward reaction.

(II) Decreasing the concentration of nitrogen will decrease the reaction rate of the forward reaction.

(III) Increasing the concentration of ammonia will increase the rate of the reverse reaction.

(IV) When a catalyst is added, the rate of the forward reaction increases while that of the reverse reaction decreases.

Explanation:

Chemical equilibrium is a dynamic reversible process where both the forward and reverse reactions occur at the same time and the concentration of all the chemical species in the system remain constant under standard conditions. Equilibrium state is dependent on:

I. Temperature of the reacting system.

II. Concentration of the reacting system.

III. Pressure of the reacting system ( for gases ).

The reaction equation for the Haber process of ammonia production: N2(g) + 3H2(g) <-> 2NH3(g)

According to Le Chatelier's principle that if an external stress or factor is imposed on an equilibrium system, the equilibrium shifts to annul or neutralize the stress:

(I) Decrease in temperature from 500oC to 100oC will increase the rate of the forward reaction because it was originally in the equilibrium state of a higher temperature.

(II) Decreasing the concentration of nitrogen will decrease the reaction rate of the forward reaction by decreasing the formation of ammonia (product).

(III) Increasing the concentration of ammonia will increase the rate of the reverse reaction by preventing its formation from the reactants nitrogen and hydrogen.

(IV) When a catalyst is added, the rate of the forward reaction increases while that of the reverse reaction decreases. This is achieved by the catalyst lowering the activation energy ( the minimum energy required for the reaction to occur ) of the reaction, hence, making it to occur faster.

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3 years ago

In what ways can the motion of an object change?

lozanna [386]

Answer:

A force can speed up or slow down an object. A force can change the direction in which an object is moving. A bigger force on an object will produce a bigger change in the motion. A heavier object requires a larger force than a lighter object in order to undergo the same change in motion.

Explanation:

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2 years ago

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ser-zykov [4K]

Answer: 0.1 meters

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3 years ago

Read 2 more answers

Compounds X and Y both have the formula C7H14. Both X and Y react with one molar equivalent of hydrogen in the presence of a pal

ArbitrLikvidat [17]

Answer:

See explanation and image attached

Explanation:

Alkenes undergo hydrogenation to give the corresponding alkanes. Where the structure of the original alkene is unknown, we can deduce the structure of the alkene from the structure of the products obtained when it undergoes various chemical reactions.

Now, the fact that we obtained 2-methylhexane upon hydrogenation and the two compounds had different heats of hydrogenation means that the two compounds were geometric isomers. The original compounds must have been cis-2-methyl-3-hexene and trans-2-methyl-3-hexene.

When reacted with HCl, the same compound C7H15Cl is formed because the stereo chemistry is removed.

However, we know that the trans isomer is more stable than the cis isomer hence the cis isomer always has a higher heat of hydrogenation than the trans isomer. Thus X is cis-2-methyl-3-hexene.

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3 years ago