what is the major organic product of the following reaction? lda/thf ch3i
Answers
The major organic product of this reaction is methyl isopropyl ketone
What is an alkylating reaction?The reaction of LDA (lithium diisopropylamide) and CH3I (methyl iodide) in THF (tetrahydrofuran) is a typical example of an alkylating reaction.
The LDA deprotonates the methyl iodide to form CH3(-) anion, which then reacts with LDA to form a new intermediate species. This intermediate species will then react with another molecule of methyl iodide to give the final product.
The major organic product of this reaction is methyl isopropyl ketone, which is formed through an alkylation reaction between the intermediate and methyl iodide. Therefore, the reaction can be summarized as:
CH3I + LDA → CH3(-) + LDA → CH3LDA
CH3LDA + CH3I → CH3C(CH3)2O(CH3)
where CH3LDA is the intermediate species formed from the reaction between LDA and CH3(-).
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Related Questions
you have 500 ml of a 0.5 m solution of ammonia nh3 (17.03 g / mol) dissolved in water. if you pour a 20 ml sample into a beaker, what will the molar concentration of the sample be?
Answers
12.5 mmol/L is the molar concentration of the sample having 0.5 M solution dissolved in water.
To answer this question, we need to calculate the molar concentration of the sample.
First, we need to find the amount of ammonium in the 500 mL of the 0.5 m solution.
We can calculate this by multiplying the molarity by the volume, which gives us 500 mL x 0.5 mol/L = 250 mmol.
Now, to find the molarity of the 20 mL sample, we need to divide the amount of ammonium by the volume of the sample: 250 mmol / 20 mL = 12.5 mmol/L.
Therefore, the molar concentration of the sample is 12.5 mmol/L.
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saturated vapor h2o at 2.00 kpa, determine the specific volume in m3/kg.
Answers
At a saturation vapor pressure of 2.00 kPa, the specific volume of water is 0.871 m³/kg.
The specific volume of a substance is the volume of the substance per unit mass. The specific volume of a saturated vapor is determined using the properties of the substance, which in this case is water.
Using the saturated vapor pressure of 2.00 kPa and the ideal gas law equation PV = nRT, where P is the pressure, V is the specific volume, n is the number of moles, R is the universal gas constant, and T is the temperature, the specific volume of water at 2.00 kPa can be calculated.
The number of moles is equal to the mass of the substance divided by the molar mass of the substance. The temperature can be found using the saturated vapor pressure and the Antoine Equation.
After calculating the temperature, the specific volume can be calculated using the ideal gas law. The result is 0.871 m3/kg.
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What trait of a wave is described by its wavelength?
O
A. The speed and direction that the wave is traveling
B. The distance from one wave peak to the next wave peak
C. The distance from the peak to the bottom of a wave
ОО
D. The number of waves that pass a point in 1 second
Help plisss!!!
Answers
Answer:
The distance from one wave peak to the next wave peak
Explanation:
a pex
The trait of a wave that is described by its wavelength is the speed and direction that the wave is traveling. Therefore, the correct option is option A.
Energy is moved around the world in two main ways: mechanical waves as well as electromagnetic waves. Mechanical waves include air and water waves caused by sound. A disruption or vibration within matter, either solid, gas, liquid, and plasma, is what generates mechanical waves.
A medium is described as material through which waves are propagating. Sound waves are created by vibrations inside a gas, while water waves are created by vibrations inside a liquid (air). The trait of a wave that is described by its wavelength is the speed and direction that the wave is traveling.
Therefore, the correct option is option A.
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Which of the following chromatography methods resembles immunoprecipitation in the purification of proteins from mixtures? A. Ion-exchange chromatography B. Gel-filtration chromatography C. Hydrophobic interaction chromatography D. Affinity chromatography
Answers
The chromatography method that resembles immunoprecipitation in the purification of proteins from mixtures is D. Affinity chromatography.
Immunoprecipitation is a technique used to isolate and purify proteins based on their specific interactions with antibodies. In this method, an antibody that specifically binds to the target protein of interest is immobilized on a solid support, such as agarose beads or magnetic beads. When the protein mixture is passed through the column containing the immobilized antibody, the target protein binds to the antibody, while non-specific proteins are washed away. The bound target protein can then be eluted from the column, resulting in its purification.
Affinity chromatography operates on a similar principle. It utilizes a specific ligand, which can be an antibody, enzyme, receptor, or other molecule, immobilized on a solid support. The ligand has high affinity and selectivity for the target protein. When the protein mixture is applied to the column containing the immobilized ligand, the target protein binds specifically to the ligand while non-specific proteins are washed away. The bound target protein is subsequently eluted to obtain a purified sample.
Therefore, the method of affinity chromatography resembles immunoprecipitation in terms of utilizing specific interactions between a ligand and the target protein to purify it from a mixture.
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Simulated Vinegar One way to make vinegar (not the preferred way) is to prepare a solution of acetic acid, the sole acid component of vinegar, at the proper pH (see Fig. 2-15) and add appropriate flavoring agents. Acetic acid (Mr 60) is a liquid at 25 °C, with a density of 1.049 g/mL. Calculate the volume that must be added to distilled water to make 1 L of simulated vinegar (see Fig. 2-16).
Answers
Answer:
Explanation:
Well, to make it simple, you want to make a solution of acetic acid with pH of 3 using pure acetic acid. We have the dissociation K which makes the life easier:
CH3COOH <--> CH3COO- + H+
k= [CH3COO-]*[H+]/[CH3COOH]
In the target solution [H+]=[CH3COO-]=10^-3. (Based upon pH=-log[H+])
So, all we have to know is how many starting mols of acetic acid (x) can end up with this concentration of H+.
At equilibrium and using the K you've mentioned we can write:
(10^-3)*(10^-3)/(X-10^-3)=1.74*10^-5
(Remeber that if we have a 10^-3 mol concentration of [H+], it means that 10^-3 mol of our starting acid has already dissociated to make it, hence that X-10^-3 instead of a sole X)
If we solve the above equation, we will see that X (the strarting concentration of acetic acid) is about 0.058 mol/lit. Now life gets even easier:
If a mol of acid acetic weights 60 gr, then 0.058 mols should weight... let me see... yes, 3.48 gr... And now, we have the weight, and all we need to calculate the volume, is the density (density=weight/volume), and fortunately, we have that piece of information as well... With a density of 1.049 g/ml, to have 3.49 gr of acid at hand we need to take 3.317 ml of acetic acid which can be rounded to 3.32 ml which you mentioned as the answer!
All that is left to find is that "appropriate flavouring agent" which in my opinion will eventually pose the main problem! (An ester will probably do it...)
As a result of this process, the proportions of oxygen and carbon dioxide in
air breathed in and air breathed out change.
Which one of the statements is true? Tick the correct box. [1]
- Air breathed out has less carbon dioxide and more oxygen than air breathed in.
- Air breathed out has less carbon dioxide and less oxygen than air breathed in.
- Air breathed out has more carbon dioxide and less oxygen than air breathed in.
- Air breathed out has more carbon dioxide and more oxygen than air breathed in.
Answers
Answer:
the third one
Explanation:
When you breathe in, you inhale oxygen and exhale carbon dioxide
Hydroelectric requires this force to increase the mechanical energy gathered.
Combustive
Velocity
Gravitational
Thermal
Answers
Electrical energy is transformed into many energy forms and is used to power most of the household appliances we used every day. which appliance is a source of mechanical energy. I've found that its between b and d but I can't choose! A) boombox (I think) B) toaster C) fridge D) blender
Answers
Answer:
D) Blender..................
Which physical property is used to be Indentify the ability to dissolve
Answers
Answer:
solubility
Explanation:
solubility is a measure of how much a substance will dissolve in a solvent.
Determine the volume of fluid in the graduated cylinder 12.8ml 12.7ml 12.78ml 12.88
Answers
Answer:
the volume is 12.79ml
Explanation:
12.8+12.7+12.78+12.88=51.16
51.16/4
=12.79
identify the most likely cause of earthquakes that occur in the area shown on the map
Answers
The most likely cause of earthquakes that occur in the area shown on the map is due to fault lines in the earth's crust.
What are earthquakes?Earthquakes are natural phenomena characterized by the shaking or trembling of the Earth's surface.
They occur due to the sudden release of energy in the Earth's crust along fault lines, which creates seismic waves that propagate through the Earth.
The Earth's crust is composed of several large tectonic plates that float on the semi-fluid layer of the Earth's mantle.
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Ricky is creating a family tree as a class project. While doing his research, he gathered pictures of all his closest relatives. From the pictures, he noticed that the people in the pictures all looked similar. What is the most likely reason for the resemblance between the relatives?
Answers
From the family pictures, people looked alike because they share similar genes.
What are genes?Genes are units of inheritance located on the chromosomes which are passed on from parents to offspring. Members of a family look alike because of the genes that are passed on from parents to offspring.
Hence, from the family pictures, people looked alike because they share similar genes.
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Can methanol be a gas
Answers
Answer:
Yes, methanol can be a gas. Methanol is a chemical compound that is composed of carbon, hydrogen, and oxygen atoms. At room temperature and standard atmospheric pressure, methanol is a liquid, but it can easily be converted into a gas by heating it to a sufficiently high temperature.
Methanol has a relatively low boiling point of 148.5 degrees Fahrenheit (64.7 degrees Celsius), which means that it can be readily vaporized at relatively low temperatures. When methanol is heated to its boiling point, it will begin to convert from a liquid into a gas, and will continue to vaporize until it reaches a state of equilibrium with its surroundings.
Methanol gas has a number of important uses, including as a solvent, a fuel, and a starting material for the synthesis of other chemicals. It is also commonly used as a laboratory reagent, due to its low toxicity and low cost.
____ NaBr + ____ Ca(OH)2 ___ CaBr2 + ____ NaOH
Answers
Answer:
2 NaBr + 1 Ca(OH)2 ---> 1 CaBr2 + 2 NaOH
what are the factors affecting gravity?
Answers
Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity:
Mass: The most significant factor affecting gravity is the mass of the objects involved. According to Newton's law of universal gravitation, the gravitational force between two objects is directly proportional to the product of their masses. Greater mass leads to a stronger gravitational force.Distance: The distance between two objects also plays a crucial role in the strength of gravity. According to the inverse square law, the gravitational force decreases as the distance between objects increases. As objects move farther apart, the gravitational attraction between them weakens.Gravitational Constant: The gravitational constant, denoted by G, is a fundamental constant in physics that determines the strength of the gravitational force. It is a universal constant and does not change, affecting the overall magnitude of gravity.Shape and Distribution of Mass: The distribution of mass within an object can influence the gravitational field it generates. Objects with a more compact and concentrated mass distribution will have a stronger gravitational pull compared to those with a more spread-out mass distribution.External Influences: Gravity can be influenced by external factors such as nearby celestial bodies or the presence of other forces. For example, the gravitational interaction between the Earth and the Moon affects tides on Earth's surface.8) F2(g) + CaBr2(g) -> CaF2(g) + Brz(g)
What type of reaction is shown above?
A) synthesis
B) decomposition
C) single replacement
D) double replacement
Answers
Out going shortwave radiation depends on:
Answers
Outgoing shortwave radiation depends on factors such as the angle of the Sun's rays, albedo, cloud cover, and atmospheric gases. These factors collectively determine the amount of solar radiation that is reflected, absorbed, and re-emitted by the Earth's surface, influencing the outgoing shortwave radiation.
Outgoing shortwave radiation depends on several factors. Firstly, it is influenced by the solar radiation received by the Earth's surface. The amount of solar radiation reaching the Earth is determined by the angle of the Sun's rays, which changes throughout the day and across different seasons. This means that outgoing shortwave radiation will vary depending on the time of day and the time of year.
Another important factor is the albedo, which refers to the reflectivity of different surfaces on Earth. Surfaces with high albedo, such as ice and snow, reflect more solar radiation back into space, resulting in lower outgoing shortwave radiation. Conversely, surfaces with low albedo, such as dark soil and vegetation, absorb more solar radiation, leading to higher outgoing shortwave radiation.
The presence of clouds also plays a role in outgoing shortwave radiation. Clouds can either reflect incoming solar radiation back into space or absorb and re-emit it as longwave radiation. The type and thickness of clouds, as well as their altitude, can affect the amount of outgoing shortwave radiation.
Finally, atmospheric gases such as water vapor, carbon dioxide, and ozone can also influence outgoing shortwave radiation. These gases absorb and re-emit some of the incoming solar radiation, impacting the amount of radiation that escapes back into space.
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How is arrangement of the elements in the periodic table important?
Answers
The periodic table is a tabular representation of chemical elements grouped by atomic number, electron configurations, and chemical characteristics. The periodic table's organisation is crucial because it helps predict the chemical characteristics and reactivity of the elements.
The periodic table arranges the elements in rows and columns based on increasing atomic number. Each row is referred to as an era, and each column is referred to as a group or family. The chemical and physical properties of elements in the same group are comparable. This is due to the fact that they contain the same number of valence electrons at their outermost energy level, which governs their chemical behaviour.
Group 1 elements, such as alkali metals, have one valence electron and are highly reactive. They easily give up this electron in order to generate a positive ion.
Group 18 elements, on the other hand, have a full complement of valence electrons and are chemically inert. They do not easily combine to produce compounds.
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fundamentally, tert-butyl alcohol does not undergo oxidation by h2cro4 because
Answers
Fundamentally, tert-butyl alcohol (t-butanol) does not undergo oxidation by H2CrO4 (chromic acid) because t-butanol lacks a hydrogen atom bonded to the carbon adjacent to the hydroxyl group, which is necessary for oxidation reactions to occur.
In order for an alcohol to undergo oxidation, the carbon atom adjacent to the hydroxyl group (the alpha carbon) must possess a hydrogen atom. This hydrogen atom is involved in the oxidation process, where it is typically replaced by an oxygen atom or other oxidizing agent. The resulting product is a carbonyl compound, such as an aldehyde or a ketone.
In the case of t-butanol, all three carbon atoms attached to the central carbon atom are tertiary (with no hydrogen atoms bonded to them), including the carbon adjacent to the hydroxyl group. Since there is no alpha hydrogen available, oxidation by H2CrO4 or other similar oxidizing agents is not possible. The absence of an available alpha hydrogen prevents the necessary oxidation reaction from occurring and thus limits the reactivity of t-butanol towards oxidation.
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If the observed value for a density is 0.80 g/mL and the accepted value is 0.70 g/mL what is the percent error?
Answers
Answer:
The answer is 14.29 %Explanation:
The percentage error of a certain measurement can be found by using the formula
\(P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ \)
From the question
actual density = 0.70 g/mL
error = 0.8 - 0.7 = 0.1
So we have
\(P(\%) = \frac{0.1}{0.7} \times 100 \\ = 14.285714...\)
We have the final answer as
14.29 %Hope this helps you
200 L of a gas at 10 atm pressure and 400 K is cooled to 100 K and reduced to 2 atm pressure. What is the new volume?
Answers
Answer:
250L
Explanation:
Data;
V1 = 200L
P1 = 10atm
T1 = 400K
T2 = 100K
P2 = 2atm
V2 = ?
To solve this question, we'll have to use the combined gas equation which is a combination of Boyle's law, Charles law and pressure law.
From combined gas equation,
(P1 × V1) / T1 = (P2 × V2) / T2
P1 × V1 × T2 = P2 × V2 × T1
Solve for V2,
V2 = (P1 × V1 × T2) / P2 × T1
V2 = (10 × 200 × 100) / (2 × 400)
V2 = 200,000 / 800
V2 = 250L
The final volume of the gas is 250L
bằng phương pháp hóa học hãy nhận biết các chất khí không màu trong 4 lọ không nhãn gồm:CO,O2,H2,CO2
Answers
Answer:
What??
Explanation:
I really do want to answer you but i dont understand your letters
waht is that??????
what are the similarities in how formula weight and molar mass are calculated
Answers
Answer:
Formula weight and molar mass are both calculated by taking the individual atoms' masses in the formula, multiplying them by how many there are in the formula, and then adding the numbers together.
The similarity between calculating formula weight and molar mass is.
Individual masses of the atoms/substance present in the chemical formula are considered ( i.e. summation of mass of atoms is used )Formula weight is simply the summation of all the masses/weight of each atom present in a chemical formula. it also known as the relative atomic mass . while
Molar mass is determined by obtaining a compound sample and dividing it by the number of substance that is present in the sample. i.e. an average mass is taken
Hence we can conclude that the similarity is Individual masses of the substances/atoms present in the chemical formula are considered.
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What does this dialogue reveal about Paul’s feelings toward Ole Grey?
He has a deep fear of the horse, so he is cautious in his approach.
He is worried that the horse will not listen to him during the race.
He has a deep respect for the horse, so he treats him with care.
He is more concerned with winning than with the horse’s well-being.
Answers
Answer:
He has a deep respect for the horse,so he treats him with care
Answer:
It's C
Explanation:
Good luck on the test.
Please help with 3 b and 4 a , b , c and e! Irrelevant answers will be reported!* ASAP!T_T
Answers
Answer:
3.Test for unsaturation is carried out by either Baeyer's test or bromine water test.
(a) What is Baeyer's reagent?
Ans:
Baeyer's reagent is an alkaline solution of Potassium Permanganate \(\bold{KMnO_4}\) .
(b) How does it detect presence of double bond in organic compound? Write the reaction involved.
Ans:
When a dilute alkaline solution of \(\bold{KMnO_4}\) is added to the given unsaturated organic compound, if the purple color of permanganate solution disappears, the presence of double bond is indicated.
For example:
2\(\bold{KMnO_4}\) + 2KOH \(\longrightarrow\)\(\bold{2K_2MnO_4 + H_2O+[O]}\)
\(\bold{CH_2=CH_2(ethene) +H_2O+[O]\longrightarrow CH_2OH-CH_2OH (ethylene \:glycol :Colourless)}\)
(c) Write the product when ethyne is treated with Baeyer's reagent.
Ans:
Product will not produce as ethyne doesn't contain double bond.
(d) Benzene (an aromatic hydrocarbon) does not give Baeyer's test though it has double bonds. Why?
Ans:
As Benzene is an unsaturated compound. The structure of benzene contains 3 alternate single double bonds.
(e) Write the reaction for bromine water test for ethyne.
Ans:
Reaction:
\(\bold{CH_2CH_2(ethene)+Br_2( red \: color) \longrightarrow CH_2Br-CH_2Br}\)
(1,2-dibromoethane (colorless}
Kolbe electrolytic method can be used to prepare alkane, alkene and alkyne.
(a) At which electrode, alkane, alkene or alkyne is obtained?
Ans:
alkane, alkene or alkyne is obtained at anode.
(b) Which electrolyte should be chosen for alkane, alkene or alkyne for the method? Suggest an example of electrolyte for each.
Ans:
alkane: Potassium or sodium salt of Carboxylic acid
alkene: Potassium or sodium salt of dicarboxylic acid
alkyne: Potassium or sodium maleate
(c) If potassium salt of dicarboxylic acid is taken for the method, which hydrocarbon is prepared?
Ans: If potassium salt of dicarboxylic acid is taken for the method, Alkene hydrocarbon is prepared.
(d) Write the detail process for the electrolysis of aqueous potassium maleate.
Ans: Attachment
(e) Suggest a demerit of the method.
Ans:
Demerits:
Kolbe electrolysis can produce a mixture of different products, including both desired and undesired ones.It requires a significant amount of energy to produce the desired products. This can make the process expensive and inefficient.It is limited to the electrolysis of alkanes with low molecular weight, and it may not be suitable for the electrolysis of more complex organic molecules.This process generates significant amounts of waste and can produce pollutants that can harm the environment.
If 39.02 grams of barium chloride are reacted in an excess of silver nitrate, _ molecules of silver chloride are produced? (Round to two places after decimal and don't put any spaces in the answer)
Answers
Approximately 2.254 x 10^23 molecules of silver chloride are produced in this reaction.
To determine the number of molecules of silver chloride produced in this reaction, we need to first write and balance the chemical equation. Barium chloride (BaCl2) and silver nitrate (AgNO3) react to form silver chloride (AgCl) and barium nitrate (Ba(NO3)2):
BaCl2 + 2AgNO3 → 2AgCl + Ba(NO3)2
We can see from the balanced equation that one mole of barium chloride reacts with two moles of silver nitrate to produce two moles of silver chloride. Therefore, we need to determine the number of moles of barium chloride that are present in 39.02 grams of the compound.
The molar mass of barium chloride is 208.23 g/mol (137.33 g/mol for Ba + 2 x 35.45 g/mol for Cl).
We can use the formula n=m/M, where n is the number of moles, m is the mass in grams, and M is the molar mass in grams/mole, to find the number of moles of barium chloride:
n = 39.02 g / 208.23 g/mol
n = 0.1873 mol
Since we have an excess of silver nitrate, all of the barium chloride will react to form silver chloride. Therefore, the number of moles of silver chloride produced will be twice the number of moles of barium chloride, or:
n(AgCl) = 2 x n(BaCl2) = 2 x 0.1873 mol = 0.3746 mol
Finally, we can use Avogadro's number, 6.022 x 10^23 molecules/mol, to convert the number of moles of silver chloride to the number of molecules:
Number of molecules of AgCl = n(AgCl) x Avogadro's number
Number of molecules of AgCl = 0.3746 mol x 6.022 x 10^23 molecules/mol
Number of molecules of AgCl = 2.254 x 10^23 molecules
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Which of the following can best be described as speed plus direction?A: AccelerationB: DecelerationC: FrictionD: Velocity
Answers
Answer:
D
Explanation:
Because speed is a scalar quantity which he has only magnitude and no direction while velocity is a vector quantity because it has both magnitude and direction.
What is a net ionic equation?
A. An equation that is balan
B. An equation that shows a
Answers
Answer:
Explanation:
An equation showing only what is involved in the reaction.
a o e x
Nobelium-254 has a half life of 3 seconds. How many half-lives would have to occur to
reduce a 15g sample down to 0.09375g?
Answers
the number of half-lives that would have occur to reduce a 15 g sample of Nobelium-254 down to 0.09375 g is 7.3
To calculate the number of half-lives that would have occur to reduce a 15 g sample of Nobelium-254 down to 0.09375 g, we use the formula below.
Formula:
2ⁿ = R/R'........... Equation 1Where:
n = Number of half-lives that have occuredR = Original mass of Nobelium-254R' = Mass of Nobelium-254 after decayFrom the question,
Given:
R = 15 gR' = 0.09375 gSubstitute these values into equation 1
2ⁿ = 15/0.093752ⁿ = 160n = log160/log2n = 7.3 half-livesHence, the number of half-lives that would have occur to reduce a 15 g sample of Nobelium-254 down to 0.09375 g is 7.3
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click on the picture of the flowers until their colors correspond to the punnett square above. HELP PLZ!
Answers
Answer:
You will need to have a red flower in the top left, a pink flower in the top right and bottom left, and a white flower in the bottom right.
Explanation:
This flower appears to express color through codominance, which means that both genes express themselves. "R" is the dominant gene for red, and "r" is the recessive gene for white. When a flower has RR genotype, the phenotype will be a red flower. When a flower has an Rr genotype, the red and white genes will both be expressed and the phenotype will be pink. When a flower has an rr genotype, it lacks the red gene and will therefore be only white.