Describe a covalent bond?

1 answer:

Natasha2012 [34]2 years ago

7 0

A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

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5) Calculate the volume, in liters, of 3.24 x 1022 molecules<br> CI2

azamat

Answer: 1.12 Liters

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given molecules}}{\text {avogadro's number}}=\frac{3.24\times 10^{22}}{6.023\times 10^{23}}=0.05moles$

1 mol of $Cl_2$ occupy = 22.4 L

Thus 0.05 mol of $Cl_2$ will occupy = $\frac{22.4}{1}\times 0.05=1.12 L$

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2 years ago

What are valence electrons?

Helga [31]

In chemistry and physics, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.

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Which of the following is a description of an exothermic reaction?

zlopas [31]

I think the best one is B

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What happens to metal railroad tracks during the heat of a summer day?

k0ka [10]

The rails expand during the heat of a summer day

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