) Predict the product for the following reaction. Assume you have an excess of potassium tert-butoxide. (CH3),COK Br
Answers
The potassium tert-butoxide is final product of the reaction is (CH3)3COH.
Why potassium tert-butoxide is (CH3)3COH?
The product for the given reaction is (CH3)3COH.
Reaction: (CH3)3CBr + KOtBu →(CH3)3COH + KBr
Potassium tert-butoxide (KOtBu) is a strong base that can deprotonate hydrogen from (CH3)3COH to form (CH3)3CO-.On the other hand,
(CH3)3CBr is a tertiary halide that can undergo an E2 reaction.
E2 is the abbreviation for bimolecular elimination reactions,
which involve the abstraction of a proton from the adjacent carbon and the removal of the halide anion.
The hydrogen that is abstracted by KOtBu can only come from the carbon that is adjacent to the bromine in (CH3)3CBr, according to Saytzeff's rule, because this is the carbon with the least number of hydrogens.
As a result, an alkene intermediate will be formed.
The KBr salt will be the by-product.
The alkene intermediate, however, is not present in the end product because it is a reactive molecule and quickly reacts with any available hydrogen.
The hydrogen is provided by the KOtBu base.
As a result, the final product of the reaction is (CH3)3COH.
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Related Questions
for the following endothermic reversible reaction at equilibrium, how will removing no(g) affect it? 4no(g) 6h2o(g) rightwards harpoon over leftwards harpoon with blank on top 4nh3(g) 5o2(g)
Answers
Removing NO(g) from the equilibrium of the endothermic reversible reaction will shift the equilibrium to the left, resulting in an increase in the production of NO(g) and H₂O(g) while consuming NH₃(g) and O₂(g).
For the endothermic reversible reaction at equilibrium, removing NO(g) will affect it as follows:
Reaction: 4NO(g) + 6H₂O(g) ⇌ 4NH₃(g) + 5O₂(g)
Since this is an endothermic reaction, it means that the reaction absorbs heat from its surroundings when it proceeds in the forward direction (left to right). At equilibrium, the rates of the forward and reverse reactions are equal.
When you remove NO(g) from the system, you are essentially decreasing the concentration of NO(g) in the reaction mixture. According to Le Chatelier's principle, the system will counteract this change by shifting the position of equilibrium to restore the balance.
In this case, the equilibrium will shift to the left to replenish the NO(g) that was removed. This means the reaction will proceed more in the reverse direction (right to left), producing more NO(g) and H₂O(g) while consuming NH₃(g) and O₂(g).
In summary, removing NO(g) from the endothermic reversible reaction at equilibrium will cause the reaction to shift to the left, producing more NO(g) and H₂O(g) while consuming NH₃(g) and O₂(g).
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between ethanoic acid, methanoic acid, and pentanoic acid, the most soluble of these compounds is . this is due to its .
Answers
The most soluble of these compounds is methanoic acid. This is due to its smaller molecular size and ability to form stronger hydrogen bonds with water molecules compared to ethanoic acid and pentanoic acid.
Methanoic acid has only one carbon atom and a carboxylic acid functional group, allowing it to readily interact with water molecules through hydrogen bonding. Ethanoic acid has a longer carbon chain and a weaker hydrogen bonding ability, while pentanoic acid has an even longer carbon chain and is less soluble due to its large molecular size.
In addition, the smaller size of methanoic acid allows it to dissolve more easily in water and form a more stable solution due to its ability to interact more closely with water molecules, leading to higher solubility compared to the other two acids.
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True or False: The periodic table has changed very little since it was originally developed by Mendeleev and Meyer.
Answers
The periodic table has changed very little since it was originally developed by Mendeleev and Meyer is referred to as a false statement.
What is a Periodic table?
This is defined as the arrangement of elements based on their atomic number in a tabular form. It consists of 18 vertical columns which re referred to as groups and seven horizontal rows called period.
Henry Moseley in 1913 organized Mendeleev's periodic table based on physical properties.This took into consideration their atomic number rather than atomic mass and other missing elements.
This is the periodic table which is used currently and therefore hasn't changed much which is why false was chosen.
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How could Thomson's atomic model explain the differences between element?
Answers
Thomson proposed that the atom was made up of a diffuse positive charge with minuscule, dispersed negatively charged electrons. There were no additional elements added to Thomson's updated model of the atom that would have allowed scientists to distinguish between various types of elements.
What is the atomic theory?The scientific idea that matter is made up of tiny units called atoms is known as the "atomic theory." Atomism, a prehistoric philosophical movement, is where the atomic theory's roots can be found.
Atomic models are models used to describe the structure of atoms.
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How killers cover up their crimes
Answers
Answer:
They hide their evidence and destroy any if absolutely necessary. You also would need to wear gloves, so you dont put your identity everywhere. Also, you need to flee and just forget that what you did, did not happen. And hope you dont get arrested xD
Explanation:
5. Which state(s) of matter |s/ar epsilon easily compressible? Select all that apply.
-liquid
-solid
-gas
-none
Answers
Answer:
Gas
Explanation:
The atoms, ions, or molecules that make up the gas are further apart and move freely at high speeds and is can easily be compressible.
Answer:
Gas
Explanation:
A gas is a substance or matter in a state in which it will expand freely to fill the whole of a container' having no shape like a solid and no fixed volume like a liquid.
A cylinder of helium gas takes up 22.4 liters of space at stp. How many atoms of helium are in the cylinder?
Answers
If a cylinder of helium gas takes up 22.4 liters of space at STP, then there are 6.022 x 10²³ atoms of helium in the cylinder at STP.
At STP (standard temperature and pressure), the volume of one mole of any gas is 22.4 liters. Helium is a monatomic gas, which means that each helium atom exists as a separate entity, rather than being bound up in a molecule with other atoms.
Therefore, one mole of helium gas contains 6.022 x 10²³ helium atoms. Since the cylinder contains 22.4 liters of helium gas at STP, it must contain one mole of helium atoms, which means that there are 6.022 x 10²³ atoms of helium in the cylinder.
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Which statement Ilustrates the difference between a chemical reaction and a nuclear reaction?
A nuclear reaction releases more energy per gram and appears to violate the law of conservation of mass.
A nuclear reaction releases less energy per gram and appears to violate the law of conservation of mass.
A nuclear reaction releases more energy per gram but does not appear to violate the law of conservation of mass.
A nuclear reaction releases less energy per gram but does not appear to violate the law of conservation of mass.
Answers
Answer:
A nuclear reaction releases more energy per gram and appears to violate the law of conservation of mass.
Explanation:
In nuclear reactions there arises a shift in the nucleus of the atom. This results in the production of a different element altogether. While in chemical reactions the electrons are rearrangement and there is no change in the nucleus.Factors like temperature, pressure, and catalysts do not affect the rate of nuclear reactions while they influence the chemical reactions.The change in the energy is higher in nuclear reactions. It arises out of the destruction of mass.Answer:
A
Explanation:
Edge 2021
250. liters of gas is collected in an expandable, sealed container. The sample is heated from 15.0 °C to 45.0 °C at constant pressure. What is the new volume of the container?
Answers
The 250 liters of gas that is collected in the expandable, sealed container. The sample is then heated from the 15.0 °C to the 45.0 °C at the constant pressure. The new volume of the container is 226.4 L.
The temperature and the volume at constant pressure is as :
V₁ / T₁ = V₂ / T₂
V₂ = V₁ T₂ / T₁
The initial volume of the gas, V₁ = 250 L
The final volume of the gas, V₂ = ?
The initial temperature of the gas, T₁ = 15 + 273
The initial temperature of the gas, T₁ = 288 K
The final temperature of the gas, T₂ = 45 + 273
The final temperature of the gas, T₂ = 318
V₂ = V₁ T₂ / T₁
V₂= ( 250 × 288 ) / 318
V₂ = 226.4 L
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what type of chemical reaction occurs in fireworks
Answers
Answer:
combustion or/and oxidation
Explanation:
how to make slime without borax or contact solution or laundry detergent or cornstarch
Answers
.The distance between the atoms of H−F is 0.92Å. What is the distance in meters?
Express your answer in meters to three significant figures.
Answers
The distance between the atoms of H-F in meters is 9.20 x 10⁻¹¹ m.
To convert a distance from angstroms (Å) to meters, we can use the conversion factor 1 Å = 1 x 10⁻¹⁰ m.
Therefore, to convert the distance between the atoms of H-F from Å to meters, we can multiply it by the conversion factor:
0.92 Å x (1 x 10⁻¹⁰ m/1 Å) = 9.2 x 10⁻¹¹ m
Rounding this to three significant figures gives:
Distance between H-F atoms = 9.20 x 10⁻¹¹ m
So the distance between the atoms of H-F in meters is 9.20 x 10⁻¹¹ m.
In summary, we can convert the distance from angstroms to meters by multiplying by the conversion factor 1 Å = 1 x 10⁻¹⁰ m. This gives a distance of 9.20 x 10⁻¹¹ m for the distance between the atoms of H-F.
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If light and sound Travel from point a to point b And start at the same time, which is gonna reach point b first
Answers
What evidence supports a scientist's conclusion that fossil B is older than fossil A? (4 points)
a
Fossil A and fossil B were both found at the same depth below Earth's surface.
b
Fossil B was found at a depth of 185 meters below Earth's surface, while fossil A was found at a depth of 50 meters below Earth's surface.
c
Fossil B was found at a depth of 50 meters below Earth's surface, while fossil A was found at a depth of 185 meters below Earth's surface.
d
Fossil A was found below Earth's surface, while fossil B was found at surface level.
Plz help need this fast!
Answers
Answer:
Choice B, as time goes on the surface level rises and stuff buried underground gets further and further below surface level.
the ribonucleotide polymer (5')gtgatcaagc(3') could only form a double-stranded structure with:
Answers
The polymer of amino acid give different types of proteins. Poly means many. Therefore, the ribonucleotide polymer (5')GTGATCAAGC(3') could only form a double-stranded structure with: (5')GCTTGATCAC(3').
What is polymerA polymer is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. The repeating subunit is called monomer. Monomer can be of same type or different type.
The linkage between units of amino acid is called peptide linkage or peptide bond. The ribonucleotide polymer (5')GTGATCAAGC(3') could only form a double-stranded structure with: (5')GCTTGATCAC(3').
Therefore, the ribonucleotide polymer (5')GTGATCAAGC(3') could only form a double-stranded structure with: (5')GCTTGATCAC(3').
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5. Commercial airplanes have a cruising altitude between 9000 m and 12,000 m. At this altitude, air pressure is less than 0.3 atm. How has technology made flying at this altitude safe?
Answers
Commercial airplanes have a cruising altitude between 9000 m and 12,000 m. At this altitude, air pressure is less than 0.3 atm. Technology has made flying at this altitude safe by air pressurization systems.
Pressurization systems constantly pump fresh, outside air into the fuselage. To control the interior pressure, and allow old, stinky air to exit, there is a motorized door called an outflow valve located near the tail of the aircraft. Larger aircraft often have two outflow valves.
The valves are automatically controlled by the aircraft’s pressurization system. If higher pressure is needed inside the cabin, the door closes. To reduce cabin pressure, the door slowly opens, allowing more air to escape. It’s one of the simplest systems on an aircraft.
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Can anyone explain dipoles in chemistry?
Answers
Answer:
See explanation
Explanation:
A dipole refers to a bond in which its two ends have opposite charges. A dipole results from a large difference in electronegativity between two atoms in a bond.
For instance, consider the bond between hydrogen and chlorine in HCl. The electronegativity of hydrogen is 2.2 while that of chlorine is 3.16. The significant electronegativity difference between the two atoms leads to a charge separation.
A partial positive charge appears on the atom that is less electronegative (hydrogen) while a negative charge appears on the more electronegative atom (chlorine).
This charge separation occurs because the shared electrons of the bond are more closely attracted to chlorine making it partially negative compared to hydrogen. A dipole moment now exists in the H-Cl bond hence the molecule is said to have a dipole.
an object in motion remain or an at rests remains at unless it is acted upon by an outside force is known as
Answers
True or false? The scientific process is linear and always follows the same sequence of steps in the same order.
A) true
B) false
Answers
Answer:
True
Explanation:
If you were to change up the order the answer may be incorrect
The scientific process is linear and most commonly follows the same sequence of steps in the same order. However, it need to follow all the steps for all scientific process. Hence, the statement is false.
What is a scientific process ?A scientific process is a well designed approach to investigate or analyze the problem and to test a relevant hypothesis. The steps included in the scientific process starts from a scientific question.
The question then generates a hypothesis based on the observations and standard data. The testing is conducted with well designed experiment with all practical tools available.
The experimental results are thoroughly evaluated and the reaches with a conclusion. The results are communicated through various journals. This is the general way of a scientific process. But not every scientific strictly need to follow this. Hence, the statement is false.
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in an electron configuration code, superscripts placed on a sublevel indicate the number of ?
Answers
a solution is prepared by adding 15.0l of acetone to a sample of pure water, and the total volume of the solution is 28.0l. what is the percent volume of acetone in this solution?
Answers
The percent volume of acetone in the solution is 53.6%.
The total volume of the solution is 28.0 L, and 15.0 L of that is acetone. To find the percent volume of acetone, we can use the following formula:
percent volume = (volume of solute / total volume of solution) x 100%
Plugging in the values we have:
percent volume = (15.0 L / 28.0 L) x 100%percent volume = 0.536 x 100%percent volume = 53.6%Therefore, the percent volume of acetone in the solution is 53.6%.
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How can the arrangement of atoms help explain how the white phosphorous and red phosphorous can both be pure phosphorous substances? Cite your evidence
Answers
Answer:
white phosphorus is P4 in a tetrahedral shape and there are some really cool videos of it reacting in air and some not very cool ones where it was used militarily it is not stable, it needs to be stored underwater
red phosphorus is a larger more complicated network solid with many more phosphorus and is very stable
they are allotropes of phosphorus
Explanation:
A gas occupies 10.2 L at 0.986 atm. What is the pressure if the volume increases to 16.0 L?
Answers
Answer:
0.629 atm
Explanation:
P1V1 = P2V2
P1 = 0.986 atm
V1 = 10.2 L
P2 = ?
V2 = 16.0 L
Solve for P2 --> P2 = P1V1/V2
P2 = (0.986 atm)(10.2 L) / (16.0 L) = 0.629 atm
Ca(OH)2 is an Arrhenius ______________ and increases the concentration of __________ when added to water
Answers
For strong electrolytes, i = number of per mole of solute dissolved. CaCl dissolves yielding three ions, one Ca ion and two Clions, thus i = (NH. ),P dissolves yielding four ions, three NH' ions and one Pion, thus i = "Colligative Properties Study Guide" by Montgomery College is licensed under CC BY 4. 0
Answers
The statement you provided refers to the determination of the van't Hoff factor (i) for strong electrolytes. The van't Hoff factor represents the number of ions produced per mole of solute dissolved in a solution.
For example, when calcium chloride (CaCl2) dissolves, it dissociates into three ions: one Ca2+ ion and two Cl- ions. Therefore, the van't Hoff factor (i) for CaCl2 is 3 because it produces three ions per mole of solute dissolved.
Similarly, when ammonium phosphate (NH4)3PO4 dissolves, it dissociates into four ions: three NH4+ ions and one PO43- ion. Thus, the van't Hoff factor (i) for (NH4)3PO4 is 4 because it yields four ions per mole of solute dissolved.
The van't Hoff factor is essential in various calculations related to colligative properties, such as boiling point elevation and freezing point depression, where it is used to account for the number of particles in solution.
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What’s an example of a single displacement reaction in everyday life
Answers
Answer:
Any time a simple metal reacts with an acid it is a single displacement reaction.
Explanation:
A simple everyday example is acid indigestion. We can relieve the distress when the stomach produces too much
HCl by drinking a solution of sodium hydrogen carbonate. The H in the HCI
displaces the Na in NaHCO/3 to produce
H/2CO/3.
anions and cations attract one another by means of
Answers
Answer:
electrostatic attraction is present in ionic bonds (which occur between a cation and an anion)
Polyetheylene is 86.0% C and 14.0% H. Determine the empirical formula of the compound.
Percent to Mass: How many grams of C and H are present in 100.0 g?
A. 86.0 g C and 14.0 g H
B. 14.0 g C and 86.0 g H
C. 12.0 g and 1.00 g
Answers
The empirical formula of the compound is \(CH_2\)
The amount of C and H present in 100 g of the compound are 86 g and 14 g respectively. Option A.
Empirical formulaTo determine the empirical formula of polyethylene, we first need to find the ratio of carbon to hydrogen atoms in the compound.
Assuming 100.0 g of polyethylene, we can convert the percentages to masses:
Mass of carbon = 86.0% * 100.0 g = 86.0 g
Mass of hydrogen = 14.0% * 100.0 g = 14.0 g
Moles of carbon = 86.0 g / 12.01 g/mol = 7.163 mol
Moles of hydrogen = 14.0 g / 1.008 g/mol = 13.889 mol
Carbon:Hydrogen = 7.163 mol : 13.889 mol
Therefore, the empirical formula of polyethylene is CH2.
Since the compound is 86% C and 14% H, the amount of C and H present in 100 g of the compound would be 86 g and 14 g respectively.
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Who was the person to prove in the laboratory, the relationship between concentrations of certain atmospheric gases and temperature levels
Answers
The person who first proved in the laboratory the relationship between concentrations of certain atmospheric gases and temperature levels was Svante Arrhenius, a Swedish chemist and physicist.
In 1896, Arrhenius published a paper titled "On the Influence of Carbonic Acid in the Air upon the Temperature of the Ground," in which he described experiments he had conducted to investigate the effect of carbon dioxide (CO2) on the Earth's temperature. Arrhenius hypothesized that changes in the concentration of atmospheric CO2 could influence the amount of heat retained by the Earth's atmosphere, leading to changes in the planet's climate.
To test his hypothesis, Arrhenius built a laboratory apparatus that simulated the Earth's atmosphere, and he measured the amount of heat absorbed by the apparatus at different concentrations of CO2. Arrhenius found that increasing the concentration of CO2 in the apparatus caused the temperature to rise, providing evidence for his hypothesis that changes in atmospheric CO2 levels could influence the Earth's temperature.
Arrhenius's work laid the foundation for modern climate science, and his findings have been confirmed by numerous subsequent studies. Today, the relationship between atmospheric CO2 concentrations and global temperature is a well-established scientific fact, and it is widely accepted that human activities, such as the burning of fossil fuels, are driving an increase in atmospheric CO2 levels and contributing to global warming.
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The alcohol family has properties similar to_____. HCl H2O NaCl H2SO4
Answers
Answer: H2O
Explanation: The alcohol family has properties similar to H2O.
Answer:
H2O
Explanation: