1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zinaida [17]
3 years ago
7

Draw the structure of caffeine. Overall, caffeine is somewhat basic. It contains 4 nitrogen atoms, each of which bears a lone pa

ir of electrons. Indicate which of the 4 nitrogen atoms provide caffeine with its basic properties and explain why. Include an explanation of why the other 3 nitrogen atoms are not basic

Chemistry
1 answer:
Pavel [41]3 years ago
6 0

Explanation:

In the structure drawn of caffeine we can see that there are 4 nitrogen atoms marked 1 to 4.

  • The nitrogen atom marked 1 has sp^2 hybridization as its lone pair are involved in resonance with the ring by which doesn't act as a proton acceptor.
  • The nitrogen atom marked 2 has sp^2 hybridization as its lone pair are pointing outwards and away from the ring due to which its lone pair are not involve in conjugation which makes this nitrogen atom basic and it acts as a proton acceptor in a molecule.
  • The nitrogen atom marked 3 and 4 in bigger ring has sp^2 hybridization as their lone pairs are involved in conjugation with ring and in resonance stabilization of amide by which they doesn't act as a proton acceptor.

You might be interested in
A reaction is first order. If the initial reactant concentration is 0.0200 M, and 25.0 days later the concentration is 6.25 x 10
erastova [34]

A reaction is first order. If the initial reactant concentration is 0.0200 M, and 25.0 days later the concentration is 6.25 x 10-4 M, then its half-life is:

7 0
3 years ago
Which of the following choices is the most conclusive in determining whether a chemical reaction has taken place?
Darina [25.2K]
For the first question, i think the correct answer is the third option. When a gas is formed, it is <span>the most conclusive in determining whether a chemical reaction has taken place given that none of your reactants is a gas.

For the second question, the statement is true.

For the third question, the correct answer is the last option.</span>
6 0
3 years ago
Consider the equation for the formation of water.
Juli2301 [7.4K]

The theoretical yield is 160 g H₂O.

<em>Moles of H₂</em> = 18 g H₂ × (1 mol H₂/2.016 g H₂) = 8.93 mol H₂

<em>Moles of H₂O</em> = 8.93 mol H₂O × (2 mol H₂O/2 mol H₂) = 8.93 mol H₂O

<em>Theoretical yield</em> of H₂O = 8.93 mol H₂O × (18.02 g H₂O/1 mol H₂) = 160 g H₂O

6 0
4 years ago
A spring scale is best defined as
Black_prince [1.1K]
A spring scale is a type of weighing scale, it works because it uses a spring that is proportional to the distance that the spring is from its resting position.
3 0
3 years ago
What can you do to see what season another planet experiences?
julia-pushkina [17]

Answer:

Observe the other planet throughout the year. Look at the environment when the season changes to see what changes in the environment.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Ammonia, NH3, can be made by reacting nitrogen and the equation is N2 + 3H2 --&gt; 2NH3 How many moles of NH3 can be made if 18
    14·1 answer
  • Fill in the coefficients that will balance the following reaction: a0NH4Cl + a1Ag3PO4 → a2AgCl + a3(NH4)3PO4
    7·2 answers
  • Write a story explaining what happens to a drop of water during the water cycle
    8·1 answer
  • Which of the following demonstrates that reactants and products are chemically different? Choose all that apply
    11·2 answers
  • What is importance of periodic table
    15·1 answer
  • How does fertilizer affect nitrogen cycle
    6·2 answers
  • Consider the following comparison.
    13·1 answer
  • Look closely at the valence electrons in all eight columns of your table from part C. Which element's location does not
    13·1 answer
  • 2) Why does the bottle collapse when sitting on the counter?
    7·1 answer
  • Typical household bleach has a ph of 13. what is the h3o concentration in household bleach? round to the nearest hundredth. × 10
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!