When isopropylbenzene (cumene) is treated with NBS and irradiated with UV light, only one product is obtained. Propose a mechanism and explain why only one product is formed. Step 1 0 Get help answering Molecular Drawing questions. Draw fishhook curved arrows and the products formed in the initiation step for this reaction. Include lone pairs in your answer.
Answers
The reaction of isopropylbenzene (cumene) with NBS and UV light leads to the formation of only one product, which is 2-bromo-2-phenylpropane.
The mechanism for this reaction involves the following steps:
tep 1: Initiation
In the presence of UV light, N-bromosuccinimide (NBS) generates bromine radical that react with isopropylbenzene to form a radical intermediate.
NBS + hν → NBS· + ·Br
·Br + isopropylbenzene → ·CH(CH3)2C6H5
Step 2: Propagation
The radical intermediate then reacts with NBS to form a brominated intermediate. This intermediate can either undergo further bromination or react with another molecule of isopropylbenzene to form the final product.
·CH(CH3)2C6H5 + NBS → ·CH(CH3)2C6H4Br + HBr
·CH(CH3)2C6H4Br + isopropylbenzene → 2-bromo-2-phenylpropane + ·C6H5
Step 3: Termination
The reaction terminates when two radical intermediates combine to form a non-radical product.
·CH(CH3)2C6H4Br + ·C6H5 → CH(CH3)2C6H4C6H5
The reason why only one product is formed in this reaction is due to the high selectivity of the bromine radicals towards the tertiary carbon in isopropylbenzene. The tertiary carbon is more accessible and reactive towards the bromine radical compared to the secondary and primary carbons. This results in the formation of only one product, 2-bromo-2-phenylpropane.
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Related Questions
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Muscles can only contract, so they occur in pairs. In the arm, the biceps muscle is a flexor-that is, it closes the limb. The triceps muscle is an extensor that opens the limb. This configuration is t
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The tension in the biceps muscle T_AB can be determined as T_AB = 2W, and the magnitude of the force exerted by the forearm on the upper arm at the elbow joint C is equal to the weight of the forearm, which is 9 N.
In this scenario, the elbow joint is modeled as a simple machine, specifically a lever system. The weight of the forearm acts as the load, and the tension in the biceps muscle acts as the effort. According to the lever principle, the input force (tension in the biceps muscle) is greater than the output force (force exerted by the forearm on the upper arm at the elbow joint).
Since the weight of the forearm is given as 9 N, we can determine the tension in the biceps muscle T_AB by using the relation T_AB = 2W, which yields T_AB = 2(9 N) = 18 N. Therefore, the tension in the biceps muscle is 18 N.
The magnitude of the force exerted by the forearm on the upper arm at the elbow joint C is equal to the weight of the forearm, which is given as 9 N. This force represents the output force of the lever system at the elbow joint.
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What shapes does viruses come in?
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Answer:
In general, the shapes of viruses are classified into four groups: filamentous, isometric (or icosahedral), enveloped, and head and tail. Filamentous viruses are long and cylindrical. Many plant viruses are filamentous, including TMV (tobacco mosaic virus).
Explanation:
Answer:
Viruses comes in four different types of shapes such as Polyhedral, Sperical, Helical and Complex.
As latitude increases,___.
temperature increases
O temperature decreases
biomes increase in size
biomes decrease in size
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Answer:
As latitude increases the temperature decreases
Organic compounds ____. A. Cannot be made in the laboratory c. All contain hydrogen b. Occur in living organisms d. All contain amino acids.
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B. occur in living organisms. The first organic substance to be synthesized in a lab was urea, which was created accidentally.
What components make up the four organic compounds?Carbohydrates, lipids, proteins, and nucleotides are organic molecules are necessary for human body function. Because they have both carbon and hydrogen, these substances are referred to as organic.
Can hydrogen not be present in organic compounds?This indicates that the presence of carbon and hydrogen atoms is a property shared by all organic molecules. organic molecules may also contain other elements such as oxygen, nitrogen, and phosphorus.
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Which would be the order of the bases on the opposite strand of dna
Answers
Explanation:
if one side is A the other would be T
if one side is G the other would be C
A-T
G-C
Plants produce hormones to help them regulate important processes, such as growth and response to the environment. Hormones produced in one part of the plant may affect cells in a different part of the plant. What type of tissue carries hormones through the body of a plant?
Vascular tissue
Reproductive tissue
Dermal tissue
Ground tissue
Answers
Answer:
vascular tissues
hope it helps :)
Answer:
vascular tissue
Explanation:
In plants, hormones travel large throughout the body via the vascular tissue (xylem and phloem) and cell-to-cell via plasmodesmata.
how does the sun generate energy and transfer energy to the earth?
Answers
Answer: The sun generates energy from a process called nuclear fusion.
Explanation: I hopes this helps you out.
Plants make food; animals only ingest it.
Compare and contrast their digestive systems.
Include a) the structures involved in the digestive system of each and b) the processes
involved in creating their own food to the point of use in another organism
to use in an organism, in order.
Answers
The digestive systems of plants and animals are quite different. The primary difference is that plants are capable of producing their own food, while animals rely on outside sources. Plants take in carbon dioxide, water, and other nutrients and turn them into glucose and oxygen via photosynthesis.
Animals, on the other hand, must consume food to survive. The digestive system of plants includes a few structures and processes that are not present in animals, such as chloroplasts, which contain chlorophyll, and stoma, which regulate gas exchange. Plant Digestive System The primary function of a plant's digestive system is to convert light energy into chemical energy that can be used to fuel the plant's cellular processes.
The resulting glucose and oxygen are then used by the plant to fuel cellular processes and support growth.
Animal Digestive System : The animal digestive system, unlike the plant digestive system, is specialized for the consumption and breakdown of food. The digestive system of animals begins in the mouth, where food is taken in and begins to be broken down by enzymes in the saliva. The food then moves through the esophagus to the stomach, where it is further broken down by stomach acid and enzymes. The nutrients are then absorbed in the small intestine, while the waste products are eliminated in the large intestine.
Conclusion : In conclusion, the digestive systems of plants and animals are quite different. While both systems involve the absorption and use of nutrients, plants are capable of producing their own food, while animals must consume food to survive. Additionally, the structures and processes involved in each system are unique.
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Which main type of sedimentary rock forms from dead plant and animal material?
Answers
Answer:
limestone, chert, dolostone, gypsum, halite (rock salt), diatomite, and chalk.
hope this helps!
Explanation:
Answer:
Letter C: Organic
Explanation:
Took the test and got it right :) Hope this helps!
How is the recombination rate important in constructing a gene map?
Answers
complete the sentence using the word below
Answers
Answer:
During a process called photosynthesis, plants take in carbon dioxide, sunlight ,and water.
Plants make sugar and give off oxygen as a by-product of this process.
Please mark me brainliest if this answer could help, have a great day.
Is climate change and global warming the same thing.
Answers
Answer: No
Explanation:
Global warming refers only to the Earth’s rising surface temperature, while climate change includes warming and the “side effects” of warming—like melting glaciers, heavier rainstorms, or more frequent drought. Said another way, global warming is one symptom of the much larger problem of human-caused climate change.
All eukaryotes are multicellular, contain organelles, and replicate via binary fission. True False
Answers
The statement is FALSE
Eukaryotes are multicellular, contain organelles, and undergo MITOSIS for cellular division.
Prokaryotes are organisms that replicate through binary fission.
describe properties of minerals.
Answers
suggest why on average an adult woman needs less energy each day than an adult man
Answers
Answer:
cause adult men are more power ful and they don't need a break but a woman needs a break
Can you label the structures of an animal cell? To review the structure of an animal cell, watch this Biof lix animation Drag the labels onto the diagram to identify the structures of an animal cell. 1. cytosol 2. cytosceleton 3. golgi apparatus 4. mitochondrion
Answers
The structures mentioned in an animal cell are: 1. Cytosol (semi-fluid substance), 2. Cytoskeleton (protein filaments), 3. Golgi apparatus (modifies and packages molecules), and 4. Mitochondrion (produces energy).
Cytosol: It is the semi-fluid, gel-like substance that fills the cell. It surrounds the organelles and is where many cellular processes take place.Cytoskeleton: It is a network of protein filaments that provides structural support and shape to the cell. It is involved in cell movement, cell division, and intracellular transport.Golgi apparatus: It is a flattened stack of membrane-bound sacs called cisternae. The Golgi apparatus processes, modifies, sorts, and packages proteins and lipids for transport to their final destinations.Mitochondrion: It is the powerhouse of the cell responsible for producing energy in the form of ATP through cellular respiration. It has an outer membrane, an inner membrane with folds called cristae, and contains its own DNA.Learn more about Cytoskeleton from the given link:
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What is the part of a flower that protects the flower bud?
Answers
\( \huge\fbox\green{ANSWER} \)
\( \mathsf \blue{sepal}\)
Answer:
The Sepal
Explanation:
The answer is the sepal.
Sepals (collectivly called the calyx) are small, green leaf-like structures that protect the flower in the bud stage.
Which generation are purebred and which are hybrids?
Answers
Answer:The parents in the F1 generation are purebred. The parents in the F2 generation are hybrids.
Explanation:
a blood clot blocking flow through the liver might cause
Answers
A blood clot blocking flow through the liver might cause a condition known as hepatic ischemia or hepatic infarction.
This occurs when the blood supply to the liver is compromised, leading to inadequate oxygen and nutrient delivery to the liver cells. The consequences of a liver blood clot can vary depending on the extent and duration of the blockage.
It may lead to liver cell damage, impaired liver function, and potential complications such as liver failure, portal hypertension, or the formation of collateral blood vessels. Immediate medical attention is crucial to diagnose and treat the underlying cause of the clot and prevent further liver damage.
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A blood clot blocking flow through the liver can cause hepatic ischemia, which can result in liver damage, liver failure, portal hypertension, and impaired liver function.
When a blood clot blocks the flow through the liver, it can lead to a condition called hepatic ischemia. Hepatic ischemia occurs when the blood supply to the liver is restricted or completely cut off. The liver requires a constant supply of oxygen and nutrients carried by the blood to function properly. When the blood flow is blocked, the liver cells may not receive enough oxygen and nutrients, leading to cell damage or death.
This blockage can have several consequences:
liver damage: The lack of oxygen and nutrients can cause damage to the liver cells. This can lead to inflammation, scarring, and impaired liver function.liver failure: In severe cases, prolonged blockage of blood flow can result in liver failure, where the liver is unable to perform its vital functions.portal hypertension: The blockage can increase pressure in the portal vein, which carries blood from the digestive organs to the liver. This can lead to the development of portal hypertension, causing complications such as varices (enlarged veins) and ascites (accumulation of fluid in the abdomen).Impaired liver function: The liver plays a crucial role in various metabolic processes, detoxification, and production of important proteins. When the blood flow is blocked, the liver's ability to perform these functions is impaired, leading to a range of symptoms and complications.Learn more:About blood clot here:
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What is an example of parthenogenesis reproduction?
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An example of pathogenesis reproduction is bees. In asexual reproduction that occurs naturally, parthenogenesis, embryos develop without fertilization.
Without any fertilization, female gametes develop during parthenogenesis, a sort of asexual reproduction.
Animals without sex chromosomes include ants, bees, and wasps. By parthenogenesis, these organisms reproduce. A few types of fish, reptiles, and plants can also reproduce in this way.
Some organisms, like crayfish, snakes, komodo dragons, and sharks, have the ability to reproduce both sexually and through parthenogenesis. Parthenogenesis that is facultative is what this is.
Recently, an expanding number of vertebrate species have been identified using this reproductive technique, which is most frequently observed in plants and invertebrate creatures.
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how does evolutionary classification differ from traditional classification? group of answer choices evolutionary classification groups organisms according to observable similarities and differences. evolutionary classification groups species into larger categories that reflect hypotheses about lines of descent. evolutionary classification is limited to explaining how eukaryotic organisms arose from prokaryotic organisms. evolutionary classification focuses on identifying evidence for explaining how life first arose on earth.
Answers
Evolutionary classification differs from traditional classification in that it groups species into larger categories that reflect hypotheses about lines of descent. The main idea behind evolutionary classification is that all species are related through descent from a common ancestor.
Evolutionary classification differs from traditional classification in that it groups species into larger categories that reflect hypotheses about lines of descent.
Evolutionary classification is a scientific classification system in which species are classified based on their evolutionary relationships with each other. This implies that species that have common evolutionary origins are grouped together while species that do not are grouped separately. In the traditional classification system, organisms are classified based on observable characteristics.
Traditional classification is based on observable characteristics of organisms such as physical and structural similarities. This system of classification is called the morphological classification system. In traditional classification, species are grouped together based on shared physical features, such as their appearance, anatomy, and physiology.
The differences between evolutionary and traditional classifications are: The classification of organisms is based on observable similarities and differences in traditional classification, whereas it is based on evolutionary relationships in evolutionary classification. Evolutionary classification groups species into larger categories that reflect hypotheses about lines of descent, while traditional classification groups species into smaller categories based on their morphological characteristics. Evolutionary classification is limited to explaining how species came into existence and evolved over time, while traditional classification is used to identify and organize organisms based on their observable features.
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FILL IN THE BLANK. "When the sister chromatids are completely separated from one another,
they are referred to as ___________ chromosomes."
Answers
When the sister chromatids are completely separated from one another during the process of cell division, they are referred to as "individual" chromosomes.
The separation in the process of cell divisionThis separation occurs during anaphase, a stage of mitosis or meiosis, where spindle fibers pull the sister chromatids apart.
Once they are fully separated and move to opposite poles of the cell, they are considered individual chromosomes.
These individual chromosomes will then be distributed into the resulting daughter cells during cytokinesis, ensuring that each cell receives an equal and complete set of genetic information.
This process is crucial for maintaining the correct chromosome number in offspring cells, allowing for proper growth, development, and function of an organism.
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A cell uses active transport to move sodium ions out of the cell. Why does the cell use active transport instead of diffusion to move sodium ions out of the cell?.
Answers
Answer:
A cell uses active transport because active transport uses energy going from high to low (against the concentraion gradient) while diffusion (passive transport which doesn't use energy) goes from low to high.
Explanation:
The cell uses active transport to move sodium ions out of the cell instead of diffusion because they are moved against a concentration gradient.
WHAT IS ACTIVE TRANSPORT?Active transport is the type of transport in which substances are moved from a region of higher concentration to a region of lower concentration.
This means that substances are moved against a concentration gradient, hence, requires energy in form of ATP to take place.
The cell uses active transport to move sodium ions out of the cell instead of diffusion because they are moved against a concentration gradient.
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1) What types of specialized cells (cells with a specific purpose such as
cardiac or nerve cells) do you think the daphnia have? What are their
functions? List at least 2 types of cells and their function.
on systems (s
Answers
Answer:
alle and the daphina cell
Which explanation explains why the Northern Hemisphere gets more direct sunlight in the Summer?
Answers
Probably too late answering this.
I don't know if they gave you answer choices, but something like:
"The way the earth is tipped on its axis in the summer has the Northern Hemisphere most closely angled to face the sun"
is what I would say.
what is the purpose of the taxonomic system
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Explanation:
The purpose of a taxonomic system is to allow for a scientific classification throughout the world. Explanation:Taxonomy is the process that describes the diversity of living things. This process is done using devices such as classification and nomenclature.
I hope it's helpful!
Evolution is a process of
Answers
Answer:
Evolution is a process by which the characteristics of living organisms change over many generations as traits are passed from one generation to the next.
Explanation:
Hope you have a good day! :)
A physical oceanographer studies all of the following except:
ete
of
Select one:
a. Currents
b. Waves
c. Tides
d. Fish
Check
Answers
Answer:
The answer is option d.
Fish
Hope this helps
an invasive plant that can live in nutrient poor soil moves into an abandoned field. later this land is cleared of this invasive species and it is discovered that now the soil is nitrogen rich. what is the best conclusion that can be made?
Answers
The conclusion that can be made, is that
the invasive species was likely a Nitrogen fixing species.
Nitrogen fixing species do not require Nitrogen from the soil to grow and live. They are capable of taking Nitrogen (in the form of N2) from the atmosphere. The invasive species put back nitrogen that the soil was missing. They didn't need the extra nitrogen and put it back into the ground.Nitrogen-fixing bacteria, microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen. More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle.
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Which statement is FALSE about epigenetic modifications?
a. The tails of the nucleosome octamer components can be modified with methylation
b. The tails of the nucleosome octamer components can be modified with acetylation
c. Only non-DNA components of chromatin are modified with epigenetic markers
d. Epigenetic modifications control whether a region is euchromatin or heterochromatin
Answers
The false statement about epigenetic modifications is:
c. Only non-DNA components of chromatin are modified with epigenetic markers.
Epigenetic modifications refer to changes in gene expression that do not involve changes to the underlying DNA sequence. These modifications can be inherited and can influence how genes are turned on or off in different cells or at different stages of development.
a. The tails of the nucleosome octamer components can be modified with methylation: This statement is true. Methylation of the tails of nucleosome octamer components, which are made up of histone proteins, can affect gene expression by either activating or repressing the associated genes.
b. The tails of the nucleosome octamer components can be modified with acetylation: This statement is also true. Acetylation of histone tails is another type of epigenetic modification that can influence gene expression. Acetylation generally leads to gene activation by relaxing the chromatin structure and allowing transcription factors to access the DNA.
d. Epigenetic modifications control whether a region is euchromatin or heterochromatin: This statement is true. Epigenetic modifications play a crucial role in determining whether a region of DNA is in a euchromatin state, which is more accessible for gene expression, or a heterochromatin state, which is more condensed and less accessible for gene expression.
In summary, the false statement is c. Only non-DNA components of chromatin are modified with epigenetic markers. Epigenetic modifications can occur on both DNA and non-DNA components of chromatin, such as histone proteins. These modifications can have significant impacts on gene expression and are essential for cellular development and function.
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