BIOLOGY COLLEGE

What might be the reason why the bromobenzene substrate is added to the reaction flask in two portions rather than all at once?

Answers

Answer 1
Answer: Bromobenzene substrate is added in two portions rather than one. The reason for this is because adding it all at once would cause a decrease in phenylmagnesium bromide and increase in the product 1-phenylthanone. The synthesis of 1,1-diphenylethanol would not be able to occur without phenylmagnesium bromide.

Related Questions

HIGH SCHOOL

Witch of the following is not part of John Daltons atomic theory? A) all elements are composed of atoms
B) all atoms of the same element have the same mass
C) atoms contain subatomic particles
D) A compound contains atoms of more than one element

Answers

The answer would be C) atoms contain subatomic particles.It is not part of John  Dalton's atomic theory.
Hope this helps!
HIGH SCHOOL

what is a pigment ranging in color from yellow to red; helpful in capturing the Sun's light energy for use in photosynthesis

Answers

Carotenoid pigment is a pigment ranging in color from yellow to red; helpful in capturing the Sun's light energy for use in photosynthesis
HIGH SCHOOL

A scientist conducted one trial of an experiment and got unexpected results. How can the scientist increase confidence in the results? by repeating the experiment several times
by changing the experimental procedure
by asking other scientists what they think about the results
by modifying the results so they are close to the expected results

Answers

Answer:

By repeating the experiment several times

Explanation:

I'm thinking changing the experimental procedure
HIGH SCHOOL

A submarine robot is operating near the ocean surface. What would its pressure and temperature measurement most likely be? A.)High pressure and cold temperature
B.)High pressure and warm temperature
C.)Low pressure and cold temperature
D.)Low pressure and warm temperature

Answers

The surface usually has low pressure and warm temperatures, because the sun is hitting it more directly, heating it up more, and low pressure because less is pressing down on it.

The bottom of the ocean would have colder temperatures because the sun is hitting it less directly, and higher pressure because there is more water pressing down onto it.

So therefore, your answer would be D.
MIDDLE SCHOOL

What is the role of glucose in photosynthesis

Answers

Glucose is the suger made from sunlight for plants.

Answer: To make substances like cellulose and starch

Explanation: During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch. Cellulose is used in building cell walls. =)

HIGH SCHOOL

Strength gains with ____ training are specific to the angle of muscle contraction.

Answers

The answer is isometric training. To simplify, the strength gains with isometric training are specific to the angle of muscle contraction. In addition, Isometric exercise or isometrics are a kind of strong physical activity in which the joint angle and muscle length do not alter throughout contraction likened to concentric or eccentric contractions or as called as dynamic or as isotonic activities.
HIGH SCHOOL

What detail is left unresolved at the end of the selection? the porter?

Answers

The final destination for jimmy and his father
MIDDLE SCHOOL

Which of the following is the best definition of empirical evidence? O
A. Evidence based on personal beliefs or preferences
O
B. Evidence gathered through direct observation
O
C. A set of untested data used to support product claims
O
D. Evidence that supports a scientific hypothesis
SUBMIT​

Answers

Empirical evidence is the information and facts collected by direct observation of the experiments or the scientific findings. Thus, option B is correct.

What is the empirical evidence?

Empirical evidence is the proof based on the experience, observations, and conducting of the original experiment and research that is an essential part of science and research methodology. It validates the facts and beliefs based on experimentation.

Therefore, the empirical evidence is based on direct observations.

Learn more about empirical evidence here:

brainly.com/question/14370298

#SPJ2

Answer:

The answer is B. Evidence gathered through direct observation

Explanation:

A P E X Hope this helps

MIDDLE SCHOOL

What is the main difference between a cell nucleus and a nucleoid? A.
size of the organelle

B.
arrangement of the cytoskeleton

C.
movement of the flagella

D.
presence or absence of a surrounding membrane

Answers

Eukaryotic cells have a nucleus, an organelle that houses proteins and RNA. It's regarded as the biggest and most significant cell organelle.

What is the difference between a nucleus and a nucleoid?

Prokaryotes include the nucleoid, an irregularly shaped area that houses genetic material. Eukaryotes have a nucleus that houses their genetic material. It is regarded as the biggest and most well-run cell.

The prokaryotes have nucleoid, which houses their genetic material. It is referred to as the compact and well-organized cell.

Therefore, Eukaryotic cells have a nucleus, an organelle that houses proteins and RNA. It's regarded as the biggest and most significant cell organelle.

To learn more about cells, refer to the link:

brainly.com/question/3142913

#SPJ2

Answer:

D. Presence or absence of surrounding membrane

Explanation:

Cell nucleus refers to the region in a eukaryote with clearly defined membrane while nucleoid doesnt have a membrane

Random Questions