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olga55 [171]
3 years ago
11

What is the significance of an electronegativity difference of 1.7 between 2 atoms?

Chemistry
2 answers:
stealth61 [152]3 years ago
8 0

Explanation:

Electronegativity is defined as the ability of an atom to attract electrons towards itself.

Whereas when there is difference in values electronegativity of two different atoms then it is known as electronegativity difference.

For example, in a HCl compound the hydrogen atom is electropositive and chlorine atom is electronegative. Electronegativity value of hydrogen is 2.1 and chlorine has 3.0.

Hence, difference in their electronegativities is 3.0 - 2.1 = 0.9.

Also, it is known that when the electronegativity difference is less than or equal to 1.7 then the bond formed between the combining atoms will be polar covalent.

natta225 [31]3 years ago
7 0
It represents the boundary between what is considered to be ionic or a covalent bond.
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How many atoms of hydrogens are found in 3.21 mol of<br>C3H8?​
damaskus [11]

Answer:

1.55 × 10²⁵ atoms of H  

Explanation:

3.21mol C₃H₈ × 8mol H × (6.022×10²³)

8 0
3 years ago
A 7.06% aqueous solution of sodium bicarbonate has a density of 1.19g/mL at 25°C what is the molarity and molality of the soluti
lilavasa [31]

<em>c</em> = 1.14 mol/L; <em>b</em> = 1.03 mol/kg

<em>Molar concentration </em>

Assume you have 1 L solution.

Mass of solution = 1000 mL solution × (1.19 g solution/1 mL solution)

= 1190 g solution

Mass of NaHCO3 = 1190 g solution × (7.06 g NaHCO3/100 g solution)

= 84.01 g NaHCO3

Moles NaHCO3 = 84.01 g NaHCO3 × (1 mol NaHCO3/74.01 g NaHCO3)

= 1.14 mol NaHCO3

<em>c</em> = 1.14 mol/1 L = 1.14 mol/L

<em>Molal concentration</em>

Mass of water = 1190 g – 84.01 g = 1106 g = 1.106 kg

<em>b</em> = 1.14 mol/1.106 kg = 1.03 mol/kg

5 0
3 years ago
Read 2 more answers
What volume of a 2.25 M sodium chloride solution will contain 4.58 moles of sodium chloride
Rzqust [24]

Answer:

Option E. 2.04 L

Explanation:

Data obtained from the question include:

Molarity of NaCl = 2.25 M

Mole of NaCl = 4.58 moles

Volume =..?

Molarity is simply defined as the mole of solute per unit litre of the solution. It is represented mathematically as:

Molarity = mole /Volume

With the above formula, we can obtain the volume of the solution as follow:

Molarity = mole /Volume

2.25 = 4.58/volume

Cross multiply

2.25 x volume = 4.58

Divide both side by 2.25

Volume = 4.58/2.25

Volume = 2.04 L

Therefore, the volume of the solution is 2.04 L

6 0
3 years ago
How many protons are in oxygen's nucleus?
UkoKoshka [18]
There are eight protons in an Oxygen's nucleus.
8 0
3 years ago
Read 2 more answers
Zn + I2 ---&gt; Znl2<br> Determine the theoretical yield of the product if 2g of Zn is used
egoroff_w [7]

Answer:

Mass = 9.58 g

Explanation:

Given data:

Mass of Zn = 2g

Theoretical yield of ZnI₂ = ?

Solution:

Chemical equation:

Zn + I₂       →     ZnI₂

Number of moles of Zn:

Number of moles = mass/molar mass

Number of moles = 2g / 65.38 g/mol

Number of moles = 0.03 mol

Now we will compare the moles of Zn and ZnI₂.

                   Zn           :          ZnI₂

                    1             :           1

                  0.03        :         0.03

Mass of ZnI₂:

Mass = number of moles × molar mass

Mass = 0.03 mol × 319.22 g/mol

Mass = 9.58 g

4 0
3 years ago
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