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4 years ago

A(n) _____ bond forms when two atoms share one or more pairs of electrons.

2 answers:

6 0

If electeon are shared, it is a covalent bond. The characteristic of covalent bond is that nonmetal elements share electrons to form stable compounds

Vlad [161]4 years ago

3 0

Answer: Option (a) is the correct answer.

Explanation:

When there is sharing of electrons between two atoms then it results in the formation of a covalent bond.

For example, carbon has atomic number 6 and its electronic distribution is 2, 4. Whereas oxygen atom has atomic number 8 and its electronic distribution is 2, 6.

Therefore, both carbon and oxygen atoms share their valence electrons in order to complete their octet and results into the formation of a coavlent compound $CO_{2}$ .

On the other hand, an ionic bond is formed by transfer of electrons between the combining atoms.

Therefore, we can conclude that a covalent bond forms when two atoms share one or more pairs of electrons.

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A gas with a volume of 4.0L at a pressure of 205 kPa is allowed to expand to a volume of 12000 mL. What is the pressure in atmos

Leni [432]

Answer: The pressure in atmospheres is 0.674 in the container if the temperature remains constant.

Explanation:

Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.

$P\propto \frac{1}{V}$ (At constant temperature and number of moles)

$P_1V_1=P_2V_2$

where,

$P_1$ = initial pressure of gas = 205 kPa

$P_2$ = final pressure of gas = ?

$V_1$ = initial volume of gas = 4.0 L

$V_2$ = final volume of gas = 12000 ml = 12 L (1L=1000ml)

$205\times 4.0=P_2\times 12$

$P_2=68.3kPa=0.674atm$ (1kPa=0.0098atm)

Therefore, the pressure in atmospheres is 0.674 in the container if the temperature remains constant.

8 0

3 years ago

The measurable properties of a substance, such as vapor pressure and surface tension, occur due to the strength of

SpyIntel [72]

Properties of a substance such as vapor pressure and surface tension depend on electrical forces between particles, as given by Coulomb's law.

The vapor pressure refers to how easily a liquid converts to gas while surface tension is the force that makes a liquid surface act as a stretched elastic skin.

Both vapor pressure and surface tension has a lot to do with the degree of polarity in a molecule. Usually, polar molecules have a low vapor pressure and high surface tension due to a high electrical forces between particles, as given by Coulomb's law.

Learn more: brainly.com/question/13440572

8 0

3 years ago

Read 2 more answers

What is the molarity of the solution produced when 8.0g NaOH is dissolved in sufficient water to prepare 500.mL of solution?

Sindrei [870]

Answer:

Molarity = 0.4M

Explanation:

Molar mass of NaOH (M)= 40

m= 8g, V= 500ml=0.5L

n= m/M=[8/40]= 0.2mol