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3 years ago

What are the two main types of chemical bonds

Chemistry

1 answer:

GalinKa [24]3 years ago

3 0

Answer:

<em>The two main types of chemical bonds are c</em><u>ovalent bonds and ionic bonds.</u>

Explanation:

Ionic bonds are formed by the electrostatic attraction between a positive ion (named cation) and a negative ion (named anion).

A cation is formed when an atom donates one or more electrons from its valence shell, while an anion is formed when an atom accepts one or more electrons.

The most classical example of a ionic bond is that of sodium chloride: sodium (Na) is a metal with one valence electron, and chlorine (Cl) is a nonmetal with 7 valence electrons. Then, sodium releases its valence electron (forming the cation Na⁺), which is accepted by chlorine (forming the anion chloride, Cl⁻). These two ions with opposite charge are bonded by the attractive electrostatic force.

Covalent bonds are the result of sharing valence electrons. In this case, the atoms do not exchange (donate/accept) electrons but share them; meaning that the shared electrons belong to the outermost energy level of the two atoms, now bonded by the covalent bond.

Furthermore, the covalent bond may be polar or non-polar. A polar covalent bond is formed when the two atoms have different electronegativities, because in such case one atom pulls the electrons harder than the other, resulting in an uneven distribution of the charge, i.e. forming a dipole.

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If the temperature of an object is 335 K, how would this be expressed on the Celsius scale?

Arturiano [62]

C it the correct answer

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3 years ago

Why is it important to balance the redox equation for the electrolysis of water?.

77julia77 [94]

Electrolysis is a process, which allows us to break down a chemical compound into its elements, completing the balance by adjusting the number of atoms on both sides of the reaction is important because the number of electrons given up during oxidation must be the same as the number of electrons gained during the reduction.

<h3>What is electrolysis of water?</h3>

It is a process of oxidation and reduction of one or more elements that, through the induction of electric current, breaks down the water molecule (H2O), thus producing gaseous hydrogen and oxygen.

Oxidation and reduction processes occur simultaneously and never in isolation, which is why they are called redox reactions.

Therefore, we can conclude that electrolysis is a process where electrical energy will change to chemical energy where it is important that the number of electrons given up during oxidation is the same as the number of electrons gained during reduction.

Learn more about balance of redox equations : brainly.com/question/1232351

7 0

2 years ago

A 0.590 gram sample of a metal, M, reacts completely with sulfuric acid according to:

Naddik [55]

Answer:

Molar mass of the metal = 59.0 g/mol

Explanation:

Vapor pressure of water at $25^oC$ = 23.78 torr

We are given:

Total vapor pressure = 756.0 torr

Vapor pressure of hydrogen gas = Total vapor pressure - Vapor pressure of water = (756.0 - 23.78) torr = 732.22 torr

To calculate the amount of hydrogen gas collected, we use the equation given by ideal gas which follows:

$PV=nRT$

where,

P = pressure of the gas = 732.22 torr

V = Volume of the gas = 255 mL = 0.255 L ( 1 mL = 0.001 L )

T = Temperature of the gas = $25^oC=[25+273]K=298K$

R = Gas constant = $62.3637\text{ L.torr }mol^{-1}K^{-1}$

n = number of moles of hydrogen gas = ?

Putting values in above equation, we get:

$732.22 torr\times 0.255L=n\times 62.3637\text{ L.torr }mol^{-1}K^{-1}\times 298K\\\\n=\frac{732.22\times 0.255}{62.3637\times 298}=0.01mol$

From the reaction shown below:-

$M+H_2SO_4\rightarrow MSO_4+H_2$

1 mole of hydrogen gas is produced when 1 mole of the metal is reacted.

Also,

0.01 mole of hydrogen gas is produced when 0.01 mole of the metal is reacted.

Moles of the metal = 0.01 mol

Mass taken = 0.590 g

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$0.01\ mole= \frac{0.590\ g}{Molar\ mass}$

Molar mass of the metal = 59.0 g/mol

5 0

4 years ago

Read 2 more answers

What are the 2 types of electrical charge?

BlackZzzverrR [31]

Answer: Electric charges are of two general types: positive and negative.

Hope this helps... Stay safe and have a great day.... :D

7 0

3 years ago

magine that an uncharged pith ball is brought into the electrostatic field of a charged rod. The side of the pith ball closest t

ivanzaharov [21]

Answer: option <span>D. be given a positive charge produced by the movement of electrons to the other end of the ball.
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Explanation:

This phenomenon is called electrostatic induction.

The excess of negative charge on the end of the rod will repel the electrons on the side of the pith ball that have been approached to it.

Then the electrons on the pith ball will move far away from this end with it will be left an excess of positive charge.

In this way the rod has induced that the ball acquires a positive charge on one end and a negative charge on the other end.
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4 0

3 years ago