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Anon25 [30]
3 years ago
12

Which formula represents a hydrocarbon

Chemistry
2 answers:
Nata [24]3 years ago
8 0

The formula for hydrocarbon is CnH(2n+2).

DiKsa [7]3 years ago
5 0

This question is incomplete. Here is the complete question:

Which formula represents a hydrocarbon?

(1) CH3I

(2) CH3NH2

(3) CH3CH3

(4) CH3OH

Answer:

The correct answer is option (3) CH3CH3 .

Explanation:

Hydrocarbon is an organic compound and as we can see in its formula, it is composed of hydrogen (H) and carbon (C).

Each carbon has 4 electrons, it is for this reason that it will have to make four bonds for the union to be stable, and since these bonds in carbon are generated in an easy and strong way, this will allow thousands of types to be generated of hydrocarbons.

There are different chains that these atoms can form:

  • Linear / Branched
  • Open / Closed

In turn, hydrocarbons can be classified as aliphatic or aromatic.

Given this information we can say that the correct answer is option C.

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What happens when a catalyst is added to a chemical reaction that is already in progress?
Elanso [62]

Explanation:

when the catalyst is added the reaction with the lower activation energy occur

3 0
2 years ago
Write the electron configuration of the element that has Z = 3 *
Natasha2012 [34]

Answer:

1s²2s^1

Explanation:

Lithium Z = 3

8 0
2 years ago
Which of the following properties of a protein is least likely to be affected by changes in pH? Tertiary structure Primary struc
chubhunter [2.5K]

Answer:

Primary structure is the correct answer.

Explanation:

  • The primary structure is the simple level of protein structure.
  • Primary structure is a basic amino acids sequences in a protein.
  • In the primary structure, amino acids are attached together by a covalent bond.
  • Primary structure is when the amino acids are joined together with peptide bonds to produce polypeptide chains
  • Changes in pH are least likely to change the amino acid sequence or disrupt peptide bonds.

Explanation:

7 0
3 years ago
Draw the Lewis structures of the molecules below and use them to answer the following questions:
Gnesinka [82]

Answer:

If NO₂ molecule written is for Nitrogen dioxide, then, four of the five molecules presented above have no dipole moment and only one of the five molecules, Ozone (0₃), has a dipole moment.

But if the NO₂ molecule is for nitrite ion, NO₂⁻, then three out of the five molecules presented have no dipole moment and only the Nitrite ion, NO₂⁻, and Ozone, 0₃, have dipole moments.

Explanation:

- The Lewis Structure for the molecules are drawn in the image attached to this answer.

The bond dipole moment uses the idea of electric dipole moment to measure the polarity of a chemical bond within a molecule. It occurs whenever there is a separation of positive and negative charges. Polarity occurs due to differences in electronegativity.

1) Browne or Trihydridoboron, BH₃ - No dipole moment in the molecule.

Each B-H bond in BH₃ is polar/forms a dipole because the B and H atoms have different electronegativities. But, the shape of the molecule is trigonal planar which is symmetrical, so the dipoles/bond polarities cancel. The resulting BH₃ molecule is non-polar.

2)Nitrogen dioxide, NO₂ has no dipole moment.

Nitrite ion, NO₂⁻ -> Has a dipole moment.

There are two NO₂ molecules, the Nitrogen dioxide molecule is linear and has no dipole moment, but the NO₂⁻ ion is a polar molecule. The geometry of the molecule is bent because of a non-bonding pair of electrons. The bent geometry causes the polarity and subsequent dipole moment.

3) Sulfur hexafluoride, SF₆ - no dipole moment.

Sulfur hexafluoride, abbreviated as SF₆, is a nonpolar molecule. SF₆ has an octahedral molecular geometry, which means that the sulfur molecule has six fluorine atoms surrounding it. While each individual bond is polar, there is no net effect as symmetrical nature of this octahedral molecular structure means the dipole moments all cancel out, meaning that the molecule is nonpolar.

4) Ozone, O₃ - has a dipole moment.

O₃ is polar because there are 18 valence electrons, so the lewis structure would position the central O connected to one single bond and one double bond to connect the other O's. The lone pair on the central O would also mean the molecule was bent, thus making it polar. Therefore, Ozone is a polar molecule with a dipole moment of 0.53 D. The molecule can be represented as a resonance hybrid with two contributing structures, each with a single bond on one side and double bond on the other.

5) Phosphorus pentachloride, PCl₅

PCl₅ has a symmetrical geometry, the vector sum of the dipole moments of the different P-Cl bonds cancel each other. Therefore, the overall dipole moment of PCl₅ becomes 0.

Hope this helps!

6 0
3 years ago
According the the arrhenius theory, which species does an acid produce in an aqueous solution?
4vir4ik [10]
Note: Above question is incomplete: Complete question is read as 
<span>According the the arrhenius theory, which species does an acid produce in an aqueous solution?
</span>A) hydrogen ions B) hydroxyl ions C) Sodium ions D) Chloride ion
.....................................................................................................................
Correct answer for above question is A) Hydrogen ions

Reason:
According the Arrhenius theory of acid and base, acid generates hydrogen ions in aqueous medium, while bases generates hydroxyl ions in aqueous medium.  
Example of Acid:
HCl(aq)          →          H+(aq)    + Cl-(aq)

Example of Base:
NaOH(aq)           →          Na+(aq)       +     OH-(aq)


6 0
2 years ago
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