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taurus [48]
3 years ago
14

Which molecule is nonpolar and has a symmetrical shape hcl?

Chemistry
2 answers:
Alchen [17]3 years ago
4 0
HCl is considered as polar molecule and that is incorrect answer, The choices provided are A) HCl , B) CH₄ , C) H₂O, D) NH₃

And the correct answer is : B) CH₄

In case of H₂O and NH₃ the high difference in electronegativity between nitrogen or oxygen and hydrogen make the bonds acquire partial charges and become polar while in case of CH₄ the difference in electronegativity between carbon and hydrogen is only 0.4 so it considered as non-polar bond
also carbon connected from all directions with Hydrogens

kipiarov [429]3 years ago
3 0

\boxed{{\text{D) C}}{{\text{H}}_{\text{4}}}} is nonpolar and has a symmetrical shape.

Further Explanation:

The polarity of a chemical bond can be determined by the difference in the electronegativities of the bonded atoms present in the molecule. If electronegativity difference exists between two bonded atoms, the bond is said to be polar and vice-versa. Also, the symmetry of the molecule plays a significant role in governing the polarity of the bond. A symmetrical molecule will always be nonpolar due to cancellation of the individual dipole moments and the contribution to the net dipole moment becomes zero.

A) {\text{N}}{{\text{H}}_{\text{3}}}  

In this molecule, there exists an electronegativity difference between nitrogen and hydrogen. N is more electronegative than H so it attracts the electron pairs towards itself, resulting in some net dipole moment in ammonia. So this molecule is polar in nature and lacks any type of symmetry (For structure, refer to the attached image).

B) HCl

Here, chlorine is more electronegative than hydrogen so this molecule is polar due to the presence of electronegativity difference between the bonded atoms. There is no symmetry of any kind in this molecule (For structure, refer to the attached image).

C) {{\text{H}}_{\text{2}}}{\text{O}}

In this molecule, oxygen is more electronegative than hydrogen so this molecule is polar in nature. There is no symmetry in the water molecule (For structure, refer to the attached image).

D) {\text{C}}{{\text{H}}_{\text{4}}}  

Here, the central carbon atom is surrounded by four hydrogen atoms. These hydrogen atoms are located in a symmetrical position with respect to carbon atom so this molecule is symmetrical in nature. The electronegativities of both carbon and hydrogen atoms are nearly similar to each other so this molecule is nonpolar in nature (For structure, refer to the attached image).

Therefore, {\text{C}}{{\text{H}}_{\text{4}}} is nonpolar and has a symmetrical shape.

Learn more:

  1. Identification of ionic bonding: brainly.com/question/1603987
  2. What type of bond exists between phosphorus and chlorine? brainly.com/question/81715

Answer details:

Grade: High School

Chapter: Ionic and covalent compounds

Subject: Chemistry

Keywords: CH4, NH3, H2O, HCl, electronegativity, polar, nonpolar, carbon, hydrogen, symmetry, symmetrical shape, molecule.

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What mass of NaNO3 must be dissolved to make 838mL of a 1.25 M solution
denis-greek [22]

Answer:

89.04 g of NaNO₃.

Explanation:

We'll begin by converting 838 mL to L. This can be obtained as follow:

1000 mL = 1 L

Therefore,

838 mL = 838 mL × 1 L / 1000 mL

838 mL = 0.838 L

Next, we shall determine the number of mole of NaNO₃ in the solution. This can be obtained as follow:

Volume = 0.838 L

Molarity = 1.25 M

Mole of NaNO₃ =?

Mole = Molarity × volume

Mole of NaNO₃ = 1.25 × 0.838

Mole of NaNO₃ = 1.0475 mole

Finally, we shall determine the mass of NaNO₃ needed to prepare the solution. This can be obtained as follow:

Mole of NaNO₃ = 1.0475 mole

Molar mass of NaNO₃ = 23 + 14 + (16×3)

= 23 + 14 + 48

= 85 g/mol

Mass of NaNO₃ =?

Mass = mole × molar mass

Mass of NaNO₃ = 1.0475 × 85

Mass of NaNO₃ = 89.04 g

Therefore, 89.04 g of NaNO₃ is needed to prepare the solution.

4 0
3 years ago
Help this question is super hard!!
melomori [17]

Answer:

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tangare [24]
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Explanation:

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<u>-TheUnknownScientist</u>

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