Which one of the following reaction is most likely to give a polysubstituted product?
A) Friedel-Crafts alkylation
B) Friedel-Craft acylation
C) Nitration
D) Sulfonation
E) Halogenation
Answers
The most likely reaction to give a polysubstituted product is Friedel-Crafts alkylation (option A).
Why does Friedel-Crafts alkylation give the polysubstituted product?In a Friedel-Crafts alkylation reaction, an alkyl halide or an alkyl group (R-X) reacts with an aromatic compound (such as benzene or other aromatic derivatives) in the presence of a Lewis acid catalyst, typically aluminum chloride (AlCl3) or another similar Lewis acid.
This is because the alkyl group added can act as a directing group, making it more likely for subsequent substituents to be added in different positions. Friedel-Crafts alkylation reactions are prone to multiple substitutions, as the intermediate carbocation can undergo additional reactions, leading to further substitution on the aromatic ring.
In contrast, acylation (option B) tends to only add one substituent, while nitration (option C), sulfonation (option D), and halogenation (option E) typically add only one or two substituents.
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Related Questions
To what temperature does a 250 mL cylinder containing 0.1 MOLHE need to be cooled in order for the pressure to be 253.2 5 K PA
Answers
we use the formula
pV=nRT
we convert Kilo Pascals to mmHg
253.25 KPa=253250 pascals
1mmHg is equal to 133.322 pascals
xmmHg are equal to 253250pascals
x=253250/133.322=1900mmHg
now we convert mmHg to atmospheres
1 atmosphere is equal to 760mmHg
x atmospheres are equatl to 1900mmHg
x=1900/760=2.5 atmospheres
in the formula:
pV=nRT
p-pressure
V-volume
n-number of moles
R-ideal constant of gases
T-temperature
the only missing variable is temperature since we know that R=0.082
250ml=0.25L
0.25*2.5=0.1*0.082T
T=0.625/0.0082=76.219K
Wood is made mostly of cellulose and has a chemical formula of C6H1005. Which of
the following equations represents the cellulose combustion reaction?
Answers
Answer:
Answer below
Explanation:
First to show combustion, you use O₂.
So C₆H₁₀O₅ + O₂ is the reaction. Assuming complete combustion, all you get as products are CO₂ and H₂O. Then you have to balance the full reaction.
C₆H₁₀O₅ + 6O₂ -----> 6CO₂ + 5H₂O
6 Carbons on each side
10 Hydrogens on each side
17 Oxygens on each side
CLOZE 2
The only way to know for sure if a chemical reaction has occurred is to identity that a new
has been formed. There are
we can look
for that help to determine if a chemical reaction has occurred. One sign of a chemical reaction
is the formation of a
observed as bubbling, flezing, or foaming.
Some chemical reactions, like the burning of wood, result in the production of
A change in
either an increase or
decrease, can indicate that a chemical reaction has occurred. The formation of a precipitate is
another sign of a chemical reaction. A
is a solid substance that
separates from a solution. A change in
such as we see
ng of a bike chain, is the final sign that a chemical reaction has occurred. If one or
Answers
Answer:
Explanation:
The only way to know for sure if a chemical reaction has occurred is to identity that a new compound has been formed. There are signs
we can look for that help to determine if a chemical reaction has occurred. One sign of a chemical reaction is the formation of a gas
observed as bubbling, flezing, or foaming.
Some chemical reactions, like the burning of wood, result in the production of heat or light energy.
A change in temperature either an increase or decrease, can indicate that a chemical reaction has occurred.
The formation of a precipitate is another sign of a chemical reaction. A
precipitate is a solid substance that separates from a solution.
A change in color such as we see in the rusting of a bike chain, is the final sign that a chemical reaction has occurred. If one or more of these signs is
presnt, a chemical reaction has occurred
please explain how to write unabbreviated and abbreviated electron configurations with ions?
Answers
Answer:
Unabbreviated: starts from the very beginning of the periodic table and continues all the way to the element.
Example: for aluminum: 1s2 2s2 2p6 3s2 3p1
Abbreviated: starts from the last noble gas electronic configuration before reaching the element.
Example: for aluminum: [Ne] 3s2 3p2
Explanation:
Unabbreviated: starts from the very beginning of the periodic table and continues all the way to the element.
Example: for aluminum: 1s2 2s2 2p6 3s2 3p1
Abbreviated: starts from the last noble gas electronic configuration before reaching the element.
Example: for aluminum: [Ne] 3s2 3p2
How does carbon-14 form?
A. When a standard carbon-12 atom is struck by gamma radiation.
B. Neutrons from space collide with nitrogen atoms in the air.
C. When 2 standard carbon-12 atoms collide with each other and fuse.
D. They are only formed inside stars.
Answers
Answer:
b
Explanation: I asked my chemistry teacher lol
Carbon - 14 is carbon's isotope that contains eight neutrons and six protons. It is formed by the collision of the atmospheric nitrogen with the neutrons in space. Thus, option B is correct.
What is carbon-14?
Carbon -14 has been known as the radioactive isotope of the carbon element with different atomic mass but has been constituted of the same atomic number.
The neutron in space collides with the nitrogen present in the atmosphere of the earth to undergo a transmutation reaction that can be shown as,
¹₀n + ¹⁴₇N → ¹⁴₆C + ₁¹H
Here, the atomic number or the number of the protons of carbon remains the same and is six, whereas the number of neutrons increases and becomes eight. This increases the atomic mass of the species.
Therefore, in option B. the neutrons collide with nitrogen to form carbon-14.
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What is the similarity between 0.6 M KI and 0.6 m KI ?
Answers
Answer:
Molarity and molality are both used to express the concentration of a solution. The amount of solute is both expressed in moles.
Explanation:
Metallic Bonds Worksheet
1. Which statement best compares the melting points of magnesium and sodium?
A. Magnesium has a higher melting point because it contributes one
additional electron per atom than sodium in the electron sea.
B. Magnesium has a higher melting point because it contributes two
additional electrons per atom than sodium in the electron sea.
C. Sodium has a higher melting point because it contributes one fewer
electron per atom than magnesium in the electron sea.
D. Sodium has a higher melting point because it contributes two fewer
electrons per atom than magnesium in the electron sea.
2. If you wanted to make a crucible for melting sodium (Na), which metal would be
most suitable for that purpose?
A. calcium (Ca)
B. rubidium (Rb)
C. lithium (Li)
D. potassium (K)
crucible
3. Scientists at a metallurgic factory are testing different metals to study the
strength of the electrical forces between their atoms. They determined the force
needed to bend a sheet of each metal and found that Metal A requires 50 N of
force, Metal B requires 30 N, Metal C requires 70 N, and Metal D requires 100 N.
Which metal will have the lowest melting point?
A. A
B. B
C. C
D. D
Read the passage and use the diagram to answer the next two questions.
The image shows a diagram for a suspension bridge such as the Golden Gate.
There are metal elements in the suspenders, towers, cables, and especially the
surface. The engineers who design bridges need to consider the properties of
metals, such as ductility and malleability.
4. If a big force acts on the metal towers of the suspension bridge, the tower will not
break into pieces like glass, but will bend instead. Which property of metals
explains this phenomenon?
A. brittleness
B. conductivity
C. ductility
D. malleability
5. Metal suspenders are required for the new bridge, and you will need a metal with
high ductility that can be drawn into long wires with ease. You test the elongation
of three different metals against the force, and the results are shown in the graph:
What is the correct order of the metals according to their suitability to be used for
suspenders? The least suitable metal will be first, and the most suitable will be
last.
A. A, B, C
B. B, A, C
C. C, B, A
D. A, C, B
i need aall the answers
Answers
Magnesium has a higher melting point than sodium. Calcium is used for the crucible because it has a higher melting point than sodium.
The melting and boiling points of metals increase across the period. Magnesium has a higher melting point because it contributes one additional electron per atom than sodium in the electron sea.
The crucible that will be used for melting sodium must have a higher melting point than sodium. Therefore, a calcium crucible should be used.
The metal that has the lowest melting point must be the metal that has the lowest density and therefor is easiest to bend. That is metal B.
A very important property of metals is ductility. It allows a metal to be drawn into sheets without breaking. Hence, the property of metals that explains the fact that the towers of the bridge does not break into pieces like glass but rather bends is called ductility.
Examining the graph that shows the test the elongation of three different metals against the force, is the correct order of the metals according to their suitability to be used for suspenders is A, B, C.
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What is the correct formula for calcium dihydrogen phosphate?
A) CaH2PO4
B) Ca(H2PO4)2
C) Ca(H2HPO4)2
D) Ca2H2PO4
Answers
Answer:
B) Ca(H2PO4)2
Explanation:
To solve this we must be knowing each and every concept related to chemical formula. Therefore, the correct option is option B among all the given options.
What is chemical formula?The chemical formula is indeed a means of expressing information about just the chemical proportion of atoms that comprise a certain chemical compound as well as molecule through the use of chemical element numbers and symbols.
Furthermore, the molecular formula does not contain any words and does not serve as a chemical name. However, it just indicates basic chemical structures and is not the same as the entire chemical structural formula. The correct formula for calcium dihydrogen phosphate is Ca(H\(_2\)PO\(_4\))\(_2\).
Therefore, the correct option is option B among all the given options.
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Calculate the wavelength (a) of a photon of green light that has a frequency (v) of 5.76 x
10145
Answers
Answer:
5133.89m
Explanation:
Wavelength = c/f
c= 3 × 10^8
f = 5.76 × 10145
= (3 ×10^8)/ (5.76 × 10145)
= 5133.89m
do isomers have the same chemical and physical properties? State a reason for your answer
Answers
Answer:
your answer is
isomerism, the existence of molecules that have the same numbers of the same kinds of atoms (and hence the same formula) but differ in chemical and physical properties.
Hope it’s helps you Buddy
Explanation:
~Zayn
Part A The first step to engineering is to define the problem. Write down the problem the students have to solve, and describe the challenges they will face when coming up with a solution.
WILL MARK BRAINLIEST!!
Answers
Answer:
Engineering is all about solving problems using math, science, and technical knowledge. And engineers have solved a lot of problems in the world by designing and building various technologies. We have everything from machines that can breathe for you in hospitals to suspension bridges to computers we use every day. All of these things were once designed by engineers using the engineering design process.
Explanation:
Answer:
Students will have to use their brains to solve problems and challenges they will face to find a solution to cleaning up oil spills. Students will face failures after completing their solution, lots of research, and problems during the making of their solutions. What will work? What won't?
Explanation:
Hope this helps!
Which of the following equations is balanced?
2H2 + O2 + 4H20
4Na + O2 - 2Na20
Fe2O3 + H2 - 2Fe + 3H20
CH4 + O2 - CO2 + H20
Answers
Answer:
4Na + O2 - 2Na20Is the balanced equations .
which of the following statements is true?
A. Displacement and distance traveled are always the same
B. Displacement and distance traveled are never the same.
C. Distance traveled is the direction of the displacement vector.
D. Displacement and distance traveled are the same if the direction does not change.
Answers
Answer:
D. Displacement and distance traveled are the same if the direction does not change.
Answer:
D
Explanation:
if a person in a single direction, then that person may travel certain distance and if the direction is not changed then its displecemengt remains same sa that person travelled distance.
1.875mps into kilometers per hour
Answers
Answer:
6,75 kilometres per hour
Explain anaerobic respiration with yeast in your own words
Answers
Answer:
Anaerobic respiration takes place in the absence of oxygen.
Anaerobic respiration in yeast is used during brewing and bread-making.
Explanation:
glucose → ethanol + carbon dioxide.
C 6H 12O 6 → 2C 2H 5OH + 2C0 2.
1. In sheep, a gene with two alleles decides wool color. The allele for white wool is
dominant to the allele for black wool. If two heterozygous sheep mate, what
percentage of the sheep will have white wool? Record your answer as a
percent.
White wool
Black wool
HINT: Create a Punnett square on scratch paper to determine the answer.
Answers
This is defined as a variant form of a gene. We were told that allele for white wool is dominant to the allele for black wool and two heterozygous sheep mated.
When we cross Ww and Ww we get WW, Ww, Ww, ww. Since white is dominant then the percentage is 3/4 = 75 percent.
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Could someone help out with this? (I added a pic below)
Answers
Answer:D
Explanation:
why cant school just be poggers for once:(
Answers
Answer:
yes the schools should be poghers for once only:)
Which of the following is an example of a situation in which an egg is receiving thermal energy through convection?
A. The egg is kept warm by its mother in the nest
B. An egg cracked on a hot sidewalk starts to cook
C. The egg is hard boiled in a pot of water
D. A metal pan on the stove fries the egg
Answers
Select the answer with the correct number of significant figures for each calculation. (6.022 × 1023) × 2.58 = 1.55 × 1024 1.554 × 1024 1.5537 × 1024
Answers
The calculation is correct with "1.55 × 10^24" three significant figures.
What is the significance of significant figures in scientific calculations?Significant figures are important in scientific calculations because they indicate the precision and accuracy of a measurement or calculation. They help ensure that the final result reflects the level of precision of the original measurements.
How do you determine the number of significant figures in a calculation?The general rule for determining significant figures is that any digit that is not zero is significant, as well as any zero between significant digits. Zeros to the left of the first nonzero digit are not significant. When adding or subtracting, the result should be rounded to the same number of decimal places as the least precise measurement. When multiplying or dividing, the result should be rounded to the same number of significant figures as the measurement with the least significant figures.
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PLEASE HELP I HATE CHEM
Why do molecules in a tetrahedral shape repel at an angle of 109.5 instead of 90 degrees?!?
Answers
What is a scientific theory?
A theory is a summary of a scientific fact based on observation.
A theory is an explanation of why a scientific process occurs.
A theory is a proven scientific law.
A theory is a guess as to what will happen.
Answers
Answer:
Explanation:
I'm guessing B)
I'm 86.7% sure that might be right.
Answer:
A theory is a broad, natural explanation for a wide range of phenomena.
What is the mass of a sample that contains 4.05 mol of Zr?
Molar mass of Zr = 65.38 g
A- 65.38 g
B- 264.79 g
C- 45.99 g
D- 0.0619 g
Answers
From what i calculated the answer to this should be B- 264.79
•All you need to do is take the mols given (4.05) and multiply that by the given atomic mass (65.38) and your answer should come out to equal B
what volume of chlorine at stp is necessary for the complete reaction of 4.81 grams of sodium metal?
Answers
To completely react with 4.81 grams of sodium metal at STP, approximately 0.136 liters of chlorine gas would be required.
To determine the volume of chlorine gas needed, we can use the principle of stoichiometry and the ideal gas law. First, we need to balance the chemical equation for the reaction between sodium and chlorine:
2 Na + Cl₂ → 2 NaCl
From the balanced equation, we can see that 2 moles of sodium react with 1 mole of chlorine gas to produce 2 moles of sodium chloride.
Next, we need to convert the given mass of sodium to moles. The molar mass of sodium (Na) is 22.99 g/mol. Therefore, the number of moles of sodium is:
4.81 g Na / 22.99 g/mol ≈ 0.2092 mol Na
According to the balanced equation, this means we would need half as many moles of chlorine gas. Thus, the moles of chlorine required is:
0.2092 mol Na / 2 = 0.1046 mol Cl₂
Finally, we can use the ideal gas law to calculate the volume of chlorine gas at STP (standard temperature and pressure). At STP, 1 mole of any gas occupies 22.4 liters. Therefore, the volume of chlorine gas needed is:
0.1046 mol Cl₂ * 22.4 L/mol ≈ 2.34 liters
So, approximately 2.34 liters (or 0.136 liters when rounded to three significant figures) of chlorine gas at STP is necessary for the complete reaction of 4.81 grams of sodium metal.
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Someone plz help me
Answers
Answer:
B. 120 cm
Explanation:
The scale is 1 to 15, so when we are given the value of 8cm all you have to do it multiply 8 by 15 which leaves you with 120.
hope this helps!
How many atoms of nitrogen are in 1.5 moles of aspartame?
Answers
Answer:
459.11 g.
Explanation:
hope this helps
PLEASE HELP THIS IS SCIENCE
Answers
I'm pretty sure the answer is A.
Answer:
where is the answer??
Please do not just take the points without awnsering the question.
During one of the trials in this project, the initial weight of ethanol is 95 g and after the combustion, the final weight of ethanol is 15. What are the number of moles of ethanol consumed during the experiment? the molar mass of ethanol is 46. 07 g/mol. Report and round your answer to the first decimal place
Answers
The number of moles of ethanol consumed during the experiment is 1.7 mol.
To calculate the number of moles of ethanol consumed during the experiment, we first need to find the change in the amount of ethanol, which is the initial amount minus the final amount;
Change in amount of ethanol=initial amount - final amount
Change in amount of ethanol = 95 g - 15 g
Change in amount of ethanol = 80 g
Next, we need to convert the change in the amount of ethanol to moles by dividing by the molar mass;
Number of moles of ethanol = (Change in amount of ethanol) / (Molar mass of ethanol)
Number of moles of ethanol = 80 g / 46.07 g/mol
Number of moles of ethanol ≈ 1.7 mol
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plz help anyone who has done the roads in the rainforest project this is the part i am suck on
Answers
Identify Which two types of subatomic particles are located in the nucleus?
Answers
Answer:
protons and neutrons
Explanation: