All categories

3 years ago

Choose the correct explanations for the aromaticity of the compound.

Chemistry

1 answer:

Vlad1618 [11]3 years ago

5 0

Answer:

Explanation:

2. The lone pairs on the nitrogen atoms do contribute to aromaticity.

3. The lone pairs on the nitrogen atoms occupy sp2 hybridized orbitals.

5. One of the two lone pairs on the oxygen atom (inside the ring) occupies a p orbital, giving a continuous system of overlapping p orbitals containing six electrons.

You might be interested in

If the density of pure water is 0.9922 g/mL at 40 ºC, calculate its theoretical molarity at that temperature. Report to 4 sig fi

OleMash [197]

Answer is: theoretical molarity of water is 55.1222 mol/L.<span>
d(H</span>₂O) = 0.9922 g/mL.
M(H₂O) = 2 · Ar(H) + Ar(O) · g/mol.
M(H₂O) = 2 + 16 · g/mol = 18 g/mol.
c(H₂O) = d(H₂O) ÷ M(H₂O).
c(H₂O) = 0.9922 g/mL ÷ 18 g/mol.
c(H₂O) = 0.0551 mol/mL.
c(H₂O) = 0.0551 mol/mL · 1000 mL/L = 55.1222 mol/L.

3 0

4 years ago

Which of the answer choices correctly describes Le Châtlier's principle?

almond37 [142]

<h3><u>Answer</u>;</h3>

A. When a reaction is at chemical equilibrium, a change in the system will cause the system to shift in the direction that will balance the change and help the reaction regain chemical equilibrium.

<h3><u>Explanation</u>;</h3>

Le Chatelier's principle states that when a change or a "stress" is placed on a system that is at equilibrium, the system will shift in such a way to relieve that change or stress.
The stresses include; changing the concentration of reactants or products, altering the temperature in the system and changing the pressure of the system.
Therefore; <u><em>when a chemical reaction is at equilibrium and experiences a change in pressure, temperature, or concentration of products or reactants, the equilibrium shifts in the opposite direction to offset the change. </em></u>

7 0

3 years ago

Read 2 more answers

What do you know about Relative Dating

gizmo_the_mogwai [7]

<span>it tells you the sequence in which events occurred, not how long ago they occurred.</span>

8 0

3 years ago

A student used 1.168g of an unknown weak acid and titrated it against 28.75 mL of 0.105M NaOH to reach the equivalence point. Wh

Vaselesa [24]

Answer:

The molar mass of the unknown acid is 386.8 g/mol

Explanation:

Step 1: Data given

Mass of the weak acid = 1.168 grams

volume of NaOH = 28.75 mL = 0.02875 L

Molarity of NaOH = 0.105 M

Since we only know 1 equivalence point, we suppose the acid is monoprotic

Step 2: Calculate moles NaOH

Moles NaOH = molarity NaOH * volume NaOH

Moles NaOH = 0.105 M * 0.02875 L

Moles NaOH = 0.00302 moles

We need 0.00302 moles of weak acid to neutralize the NaOH

Step 3: Calculate molar mass of weak acid

Molar mass = mass / moles

Molar mass = 1.168 grams / 0.00302 moles

Molar mass = 386.8 g/mol

The molar mass of the unknown acid is 386.8 g/mol

3 0

3 years ago

Scientists changed the genes of a tomato plant in order to produce a protein which is a natural pesticide. Why would this be cla

soldi70 [24.7K]

Answer:

The plant would be insect-resistant and improve its chances of success.

Explanation:

5 0

3 years ago