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3 years ago

When a bond forms between two atoms

Chemistry

2 answers:

ahrayia [7]3 years ago

6 0

Answer: The correct answer is Option C.

Explanation:

A bond is formed of when two atoms come close to each other either by sharing electrons or by transferring of electrons from one atom to another.

In the process of bond formation, energy is released.

A bond is broken between two atoms when the atoms get away from each other. In the process of bond breaking, energy is required.

Hence, the correct answer is Option C.

Liono4ka [1.6K]3 years ago

4 0

C. energy is released
(Forming bond is exothermic)

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How many atoms and ions does lithium sulfite have?

Serhud [2]

Answer:

Hence the ions per mole are:

$Li^{+}= 2 ions$

$SO_{3}^{2-}(aq)= 1 ions$

In one mole of Li2SO3 , the number of the atoms are

$N_{a}=6.022\times 10^{23}$

Explanation:

The formula of lithium sulfite is Li2SO3.

$Li_{2}SO_{3}$

It contain Li+ and SO3(2-) ions.This can be represented by :

$Li_{2}SO_{3}(s)\rightarrow 2Li^{+}(aq) +SO_{3}^{2-}(aq)$

Hence one mole of Li2SO3 will give 2 Li+ ions and 1 SO3 (2-) ion.

Hence the ions per mole are:

$Li^{+}= 2 ions$

$SO_{3}^{2-}(aq)= 1 ions$

Number of atoms in lithium sulfite depends upon the mass of the Li2SO3 present .

Li2SO3 = 93.94 g/mole

This mass is equal to 1 mole of Li2SO3

Now 1 mole of any substance contain Na atoms . This is known as Avogadro Number.

$N_{a}=6.022\times 10^{23}$

Hence , if 1 mole of Li2SO3 is present then it contains Na atoms

If other then 1 mole present then number of atoms are calculated by:

$Number\ of\ Atoms=Moles\times (N_{a})$

Here n = number of moles

if the mass of the compound is given then first calculate the number of moles.

$Moles=\frac{mass}{Molar\ mass}$

6 0

3 years ago

Places the following layers in sequence from the outermost layer to the innermost layer ?

Elena L [17]

Crust, Mantle, Outer core, Inner Core

8 0

3 years ago

Read 2 more answers

Can u pls help me with this question

ziro4ka [17]

I think it is A as solid atoms are close and gases are far away

8 0

3 years ago

a scientist uses 68 grams of CaCo3 to prepare 1.5 liters of solution. what is the molarity of this solution?

victus00 [196]

Answer: 0.4533mol/L

Explanation:

Molar Mass of CaCO3 = 40+12+(16x3) = 40+12+48 = 100g/mol

68g of CaCO3 dissolves in 1.5L of solution.

Xg of CaCO3 will dissolve in 1L i.e

Xg of CaCO3 = 68/1.5 = 45.33g/L

Molarity = Mass conc.(g/L) / molar Mass

Molarity = 45.33/100 = 0.4533mol/L

7 0

4 years ago

Rocks formed by changes in heat and pressure or the presence of hot

pantera1 [17]

The answer would be: Igneous Rocks

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4 years ago