Which of the following is an intermediate in the bromination of ketones under acidic conditions? O a carbanion O an enolate O an enol O an beta-hydroxyketone

Answers

Answer 1

An enolate is an intermediate in the bromination of ketones under acidic conditions

An enolate is a type of carbanion intermediate that is formed by the deprotonation of a carbonyl group in an aldehyde or a ketone. It has a negatively charged carbon atom that is adjacent to a double-bonded oxygen atom (C=O) in the carbonyl group. Enolate intermediate can be formed by the addition of a strong base to a carbonyl compound, such as lithium diisopropylamide (LDA) or sodium hydride (NaH). Once formed, enolates can participate in a variety of chemical reactions, such as nucleophilic addition and substitution, condensation, and elimination reactions.

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Related Questions

QUESTION 7 Can you use alligation for any type of liquid? ​

Answers

Answer:

Yes you can use alligation for a type of liquid. Explanation: Alligation is an old and practical method of solving arithmetic problems related to mixtures of ingredients.

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Thus, we can use allegation for any type of liquid.

What is matter?

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter. Allegation is a form of liquid that we may utilize. Allegation is a time-tested and useful strategy for tackling mathematical issues involving combinations of elements.

Thus, we can use allegation for any type of liquid.

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Give the coefficient of y in the following expression. 2xz² - 7xy + 4.​

Answers

Answer:

the coefficient of y is -7

a molecure that contains 3 iddentical polar bonds to the central atom will be

Answers

ANSWER:

Nonpolar

sorry if I'm wrong

What is an extinct species? *
(10 Points)
O A. a species that blends in easily with its environment
O B. a species that resembles another species
O C. a species that was unable to adapt and died out
O D. a species that is bred for specific characteristics

Answers

Answer: C

Explanation: I got it right.

1 point
Which piece of apparatus can only measure a single fixed volume?
А250 cm beaker
B50 cm burette
С100 cm measuring cylinder
D25 cm pipette

Answers

Answer:

50 CM burette

Explanation:

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A food company produces raspberry coulis as a topping for its best-selling line, double strength chocolate mousse pie. Fresh raspberries comprising 5% seeds, 20% pulp solids, and 75% water are homogenised and placed in a stainless steel vat. Sugar is added to give a raspberry:sugar mass ratio of 3.5:1. The mixture is blended, strained to remove the seeds, then heated to reduce the water content to 35%. Half a tonne of coulis is produced every day.

Required:
a. What mass of raspberries is required per week?
b. How much sugar is required per week?
c. What is the sugar content of the coulis?

Answers

Answer:

5357.1429kg per week

2142.8571 kg per week

Explanation:

Given that :

Fresh Raspberries :

5% = seeds

20% = pulp solids

75% = water

Raspberry : Sugar = 3.5 : 1

Water content = 35%

Coulis produced per day = 0.5 tonnes

Mass of Raspberry produced per week :

Mass is measured in kg;

1 tonne = 1000kg

0.5 tonne = (1000/2) kg = 500kg

Mass of Coulis produced per week = 500kg * 7 = 3500kg

Coulis contains 35% water, Raspberry required 75% water :

(3500 / 35) * 75 = 7500kg

Raspberry : Sugar ratio = 3.5 : 1

Mass of Raspberry :

[7500 - (1 /3.5) * 7500]

7500 - 2142.8571

= 5357.1429kg per week

B.

Sugar required per week:

(1/3.5) * 7500kg

= 2142.8571 kg per week

C.)

Sugar content in coulis :

Which is correct order of the weather observed with each cloud type from 1 to 4?


A. Rain, thunderstorm, snow, fair

B. Light rain, fair, thunderstorm, fair

C. Light rain, thunderstorm, fair, fair

D. Hail, lightning, thunderstorm, fair

Answers

Answer:i thinks its A

Explanation:but who knows

what causes the different crusts to rise and lower?

Answers

Answer:

tectonic plates

Explanation:

The hot mantle below the crust and its high pressure on the crusts. It also created volcanoes. The hot mantle rises then sinks back down cause if the mantle rise due to heat, then it will fall due to cooling.

PLS HELP ME WITH MY ASSIGNMENT WILL MARK BRAINLIEST!

Answers

I believe it would be number 2 Cation +1

Answer:

D. anions ; +1

Explanation:

Alkali metals tend to lose one electron and form ions with a single positive charge. 'alkali metals typically lose 1 eclectron to form anions with a charge of +1".

if an atom has 22 protons 28 neutrons 20 electrons what would its atomic number be

Answers

Answer:

22

Explanation:

The atomic number indicates the amount of protons, so it would be 22

PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP

DUE IN 5 MINUTES CHEMISTRY DIMENSIONAL ANALYSIS

In 2009, Usain Bolt ran 100 meters in 9.58 seconds. What is this speed in km/hr? (!! DIMENSIONAL ANALYSIS!! NOT A REGULAR PROBLEM)

Answers

100 m = 0.1 km
9.58 sec = 9.58/3600 = 0.00266 hr
Speed = 0.1/0.00266= 37.6 km/hr
Can you mark it brainliest?

Of the predators in the image, which one is most likely a keystone species?

O pine marten
O mountain lion
O eagle
O wolf

Answers

Answer:

mountian lion

Explanation:

Which of the following can be calculated from the mass of the reactants used in a chemical reaction? (Select all that apply)
Theoretical yield of products
Amount of limiting reactant used in a reaction
Actual yield of products
Amount of excess reactant from a reaction

Answers

Answer:

Can you explain it more please

Explanation:

Is nitric acid a strong or weak acid. Explain your answer.

Answers

Answer:

There are only a few (7) strong acids, so many people choose to memorize them. All the other acids are weak. The strong acids are hydrochloric acid, nitric acid, sulfuric acid, hydrobromic acid, hydroiodic acid, perchloric acid, and chloric acid.

Explanation:

그것은 당신의 교육에 도움이 되기를 바랍니다

20 Points!! Which of the following is a synthesis reaction? AgNO3+NaCI--> AgCI+NaNO3
CH4+O2->CO2+H2O SO3+H2O-> H2SO4 Cu+AgNO3 ->Ag+CuNO3

Answers

the third one
synthesis reactions have multiple reactants that synthesize into one product

6. Elements in column (group) 18 (8A) are called the________ and the outermost electrons are found in
the p sublevel. Color these elements a different color and reference this group on the legend.

Answers

Answer:

Noble gases

Explanation:

Noble gases have filled electron shells (group 18=8 electrons) and are all odorless, colorless, monatomic gases with very low chemical reactivity.

SUMMARY: Write a 3-4 sentence summary about molecules.

Answers

Answer:

molecules definition is that "a molecule is an electrical neutral group of two or more atoms held together by chemical bonds molecules are distinguished from ions by their lack of electrical charge." molecules have a part of many things we touch or come across in a everyday life. se example of theses things are water,nitrogen, glucose, and many other things.a molecule is an atom that forms a chemical bond with another atom.

Explanation:

there

Which half reaction is associated with the anode?
Sn(s) —> Sn2+ (aq) + 2e-
Sn2+ (aq) + 2e- → Sn(s)
Pb2+ (aq) + 2e-->Pb(s)
Pb(s)->Pb2+ (aq) + 2e-

Answers

Answer:

vgf

Explanation:

Answer:

its either A or B

Explanation:

took the test twice and guessed LOL
its not C or D :>

In fossil comparisons, it helps to know about similar:

living things
questions
incomplete remains

Answers

Answer:

Fossils tell us when organisms lived, as well as provide evidence for the Fossils are the preserved remains or traces of animals, plants, and other organisms from the past. Fossils, by comparing the anatomies of both modern and extinct species, allows scientists to study the skin, hair, and organs of ancient creatures.

Explanation:

A compound X has the following percentage composition 66.7% carbon, 11.1% hydrogen and 22.2% oxygen .Calculate the empirical formula of X.The relative molecular mass of X is 72 calculate the molecular formula​

Answers

Explanation:

c. h. o

66.7%. 11.1%. 22.2%

____. ____. ____

12. 1. 16

1.558. 11.1. 1.39. (divide by the smallest)

1. 8. 1

empirical formula=ch8o

What are the three types of plate boundaries? What is the direction of movement at each boundary?

Answers

There are three kinds of plate tectonic boundaries: divergent, convergent, and transform plate boundaries.

This image shows the three main types of plate boundaries: divergent, convergent, and transform.

This image shows the three main types of plate boundaries: divergent, convergent, and transform. Image courtesy of the U.S. Geological Survey. Download image (jpg, 76 KB).

The Earth’s lithosphere, which includes the crust and upper mantle, is made up of a series of pieces, or tectonic plates, that move slowly over time.

A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge and Pacific Ring of Fire are two examples of divergent plate boundaries.

When two plates come together, it is known as a convergent boundary. The impact of the colliding plates can cause the edges of one or both plates to buckle up into a mountain ranges or one of the plates may bend down into a deep seafloor trench. A chain of volcanoes often forms parallel to convergent plate boundaries and powerful earthquakes are common along these boundaries.

At convergent plate boundaries, oceanic crust is often forced down into the mantle where it begins to melt. Magma rises into and through the other plate, solidifying into granite, the rock that makes up the continents. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed.

Two plates sliding past each other forms a transform plate boundary. One of the most famous transform plate boundaries occurs at the San Andreas fault zone, which extends underwater. Natural or human-made structures that cross a transform boundary are offset—split into pieces and carried in opposite directions. Rocks that line the boundary are pulverized as the plates grind along, creating a linear fault valley or undersea canyon. Earthquakes are common along these faults. In contrast to convergent and divergent boundaries, crust is cracked and broken at transform margins, but is not created or destroyed.

On another planet, the isotopes of titanium have the given natural abundances.
Isotope Abundance
Mass (u)
46Ti
70.600%
45.95263
48Ti
12.900%
47.94795
50Ti
16.500%
49.94479
What is the average atomic mass of titanium on that planet?

Answers

im pretty sure you do the number times the percentage converted to a decimal and then add the sums so (46*0.706)+(48*0.129)+(50*0.165)
32.476+6.192+8.25
=46.918 amu

*i dont trust my calc so pleasee check if the answer is right and also remember to convert a percent to decimal move the decimal back 2 places so like for 12.9% the decimal is gonna be 0.129

hope this helpss ask if you have questions

an alloy is a metal that has?

Answers

An alloy always has two or more elements/metals in it. An alloy always has at least metal in it.

Steels have iron and carbon in it. Bronze is copper and tin, or aluminum, or manganese, or zinc. German silver isn't silver at all and contains copper, zinc, and nickel.

Hope this helps!

5 pos. 1. An excess of sodium sulfate was added to a 500. mL sample of polluted water. The
mass of lead (II) sulfate that precipitatcd was 308.88 mg. Determine the mass of lead that was in
the polluted water.
Na2SO4(aq) + Pb2+ (aq) → 2Na(aq) + PbSO4(s)

Answers

Answer:

[tex]m_{Pb^{2+}}=0.211gPb^{2+}[/tex]

Explanation:

Hello!

In this case, according to the stoichiometry of the reaction, it is possible to evidence the 1:1 mole ratio between lead (II) ions and lead (II) sulfate precipitate; that is why we can compute the mass of lead (II) in the polluted water as shown below:

[tex]m_{Pb^{2+}}=308.88mgPbSO4*\frac{1gPbSO4}{1000mgPbSO4} *\frac{207.2gPb^{2+}}{303.26gPbSO4} \\\\m_{Pb^{2+}}=0.211gPb^{2+}[/tex]

Best regards!

Sodium metal reacts with chlorine gas to produce crystals of sodium
chloride. Show phases in your equation.

Answers

Answer:

Na(s) + Cl(g) = NaCl(s)

Explanation:

s means solid

g means gas

Metals are solid at room temperature.

Crystals are solids

Beryllium oxide, Beo, is an electrical insulator. How
many moles of beryllium oxide qre in a 250 gram
sample of the compound?

Answers

Answer:

There are 10.0 moles of beryllium oxide in a 250 grams sample of the compound.

Explanation:

We can calculate the number of moles (η) of BeO as follows:

[tex] \eta = \frac{m}{M} [/tex]

Where:

m: is the mass = 250 g

M: is the molar mass = 25.0116 g/mol

Hence, the number of moles is:

[tex] \eta = \frac{250 g}{25.0116 g/mol} = 10.0 moles [/tex]

Therefore, there are 10.0 moles of beryllium oxide in a 250 grams sample of the compound.  

I hope it helps you!

4)
On a hot day, your friend brings you some iced tea to cool off. Only, its unsweetened. You add sugar, but it just does not dissolve
fast enough. Which procedure would speed up the dissolving process?
A)
Add the sugar in the dark.
B)
Add larger crystals of sugar, or sugar cubes.
C)
Take the tea up to the top of a close mountain.
D)
• Take out the ice and stir it up outside where it is warmer.

Answers

Answer: D)

• Take out the ice and stir it up outside where it is warmer.

Explanation:

Answer:

thank you! I made it to an 100% on USA test prep...

the answer is: Take out the ice and stir it up outside where it is warmer.

Explanation:

I have a lot of rain last night when I go to bed. Stay safe!

How many atoms are in 12 moles of sodium?

Answers

Answer: There are 1.20 x 1024 atoms of sodium in 2 moles

Explanation:

where do coal,oil and natural gas came from?​

Answers

Answer:

I hope it will help you

plz mark me as brainliest

plz thank my answer

Diffusion of Sucrose in Gelatin. A layer of gelatin in water 5 mm thick and con-taining 5.1 wt % gelatin at 293 K separates two solutions of sucrose. The concentra-tion of sucrose in the solution at one surface of the gelatin is constant at 2.0 g sucrose/100 mL solution, and 0.2 g/100 mL at the other surface. Calculate the flux of sucrose in kg sucrose/s

Answers

Answer:

the flux of sucrose is 9.072 × 10⁻⁷  kg sucrose / m² sec

Explanation:

Given the data in the question;

water-gelatin solution separating two different concentration solutions of sucrose; 5.1 wt % gelatin at 293 K; at this conditions diffusivity of sucrose in water gelatin solution is;

[tex]D_{AB}[/tex] =  0.252 × 10⁻⁹ m²/sec.

we know that; 1 L = 0.001 m³, 1mL = 0.001 L

[tex]C_{A1}[/tex] = 2.0 g sucrose/100 mL = 2.0 × 10⁻³ kg sucrose / 100 × 10 ⁻³ L

[tex]C_{A1}[/tex]  = 2.0kg sucrose / 100 L

[tex]C_{A1}[/tex] = 2.0 kg sucrose / 100 × 10⁻³ m³

[tex]C_{A1}[/tex]  =  20 kg sucrose / m³

[tex]C_{A2}[/tex] =  0.2 g sucrose/100 mL = 0.2 × 10⁻³ kg sucrose / 100 × 10⁻³ × 10⁻³ L

[tex]C_{A2}[/tex] = 2 kg sucrose / m³

Thickness ß = 5 mm = 5 × 10⁻³ m

Now, flux of sucrose in kg sucrose / m³sec will be;

using the formula, [tex]N_{A}[/tex] = [tex]D_{AB}[/tex] /ß ( [tex]C_{A1}[/tex] - [tex]C_{A2}[/tex] )

we substitute

[tex]N_{A}[/tex] = (0.252 × 10⁻⁹ m²/sec /  5 × 10⁻³ m) ( 20 kg sucrose / m³ - 2 kg sucrose / m³ )

[tex]N_{A}[/tex] = (0.252 × 10⁻⁶ / 5) × 18 kg sucrose / m² sec

[tex]N_{A}[/tex]  = 4.536 ×  10⁻⁶  / 5 kg sucrose / m² sec

[tex]N_{A}[/tex] = 9.072 × 10⁻⁷  kg sucrose / m² sec

Therefore, the flux of sucrose is 9.072 × 10⁻⁷  kg sucrose / m² sec

Other Questions
Suppose that the world's current oil reserves is R = 2200 billion barrels. If, on average, the total reservesare decreasing by 15 billion barrels of oil each year, answer the following:A.) Give a linear equation for the total remaining oil reserves, R, in billions of barrels, in terms off, thenumber of years since now. (Be sure to use the correct variable.)R=-15t+2200B.) 15 years from now, the total oil reserves will be 1975billions of barrelsC.) If no other oil is deposited into the reserves, the world's oil reserves will be completely depleted allused up) approximately 146.60x years from now.(Round your answer to two decimal places.)age instructor Integer of 56 how many units is it away from 12 A man drag a 10. 0 kg bag of mulch at a contant peed applying a 22. 5 N force at a 32-degree angle. What i the friction force acting on the bag? Place the numbers in order from least to greatest. 3 Look at the equation below.y = 2x - 2Which situation is best described by theequation?The temperature at 2:00 A.M. is 2C andrises 2 each hour for x hours.The temperature at 2:00 A.M. is -2C andrises 2 each hour for x hours.The temperature at 2:00 A.M. is 2C anddrops 2 each hour for x hours.The temperature at 2:00 A.M. is -2C anddrops 2 each hour for x hours.?? Which of the following statements is accurate about the land account Mario and Russell plot a triangle on a coordinate grid and then perform arotation and a translation. Russell thinks the original triangle and final triangleare congruent but Mario disagrees. Which student is correct and why?Russell is correct. Since neither rotations no translations preserve distance, thetriangles are congruent.O Mario is correct. Since neither rotations not translations preserve distance, thetriangles are not congruent.Mario is correct. Since both rotations and translations preserve distance, the trianglesare congruent.Russell is correct. Since both rotations and translations preserve distance, thetriangles are congruent. What are the 10 traits of theater? What is [H1+] in a solution prepared by mixing the following solutions12.5 mL of 2.30 M HCl27.8 mL of 3.60 M HCl18.2 mL of 6.90 M HCl15.0 mL of water what is three fourths plus one third The internment order was issued to move Japanese immigrants and Japanese Americans to the East Coast. to the West Coast. away from the East Coast. away from the West Coast. what is the highest navigable lake in south america?a. Lake Titicacab. Lake Eriec. Lake Michigan dd. Lake Ontarioe. Huron Lake What is the value of 9^6/9^4? Alex has 2/4 quarts of chocolate milk left in a jug. In another jug he had 2 1/2 pints of chocolate milk . Can Alex pour the milk from both jugs into a third jug that has a capacity of 2 gallons. Why is the federal funds rate so influential? The process of genetic engineering usually involves altering the dna of an organism so that. The Morris family is planning to carpet the entire home. The type of carpet the family wants is sold at two different stores. store A sells 50 square feet of carpet for $325. The equation y=7.25x represents the cost of buying x square feet of carpet from store B What is the main idea stanza 3 in We Wear the Mask? How would you classify angle 1 and angle 5? An atom of iron has an atomic number of 26 and a mass number of 56. How many protons plus neutrons are in the nucleus?.