Complete the curved arrow mechanism for the reaction of 4-methylpentanenitrile and lialh4, followed by the addition of acid to give the major product
Answers
The curved arrow mechanism for the reaction as described is as represented in the attached image.
Nitrile reduction by LiAlH4Nitriles, upon reaction with LiAlH4 can be converted to 1° amines.
Opon occurrence of this reaction, the hydride nucleophile attacks the electrophilic carbon in the nitrile to form an imine anion. Once stabilized by a Lewis acid-base complexation the imine salt can accept a second hydride to form a dianion.
On this note, the nitrile reduction of 4-methyl pentanenitrile and lialh4, followed by the addition of acid to give the major product is as represented in the attached image.
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Related Questions
A 112g sample of co(g) is combined with a 32g sample of o2(g) and the reaction represented proceeds as completely as possible.which two of the following statements are correct? *
a. co(g) is the limiting reactant.
b. o2(g) is the limiting reactant.
c. 4mol of co(g) reacts.
d. 2mol of co(g) remains unreacted.
e. 144g of co2(g) is produced.
Answers
Based in the equation of the reaction, oxygen gas, O2 is the limiting reactant and 2 moles of CO remain unreacted
What is the equation of reaction between CO and O2?The reaction of carbon(ii) oxide, CO and oxygen, O2 is a redox reaction which produces carbon (iv) oxide, CO2.
The equation of the reaction. is given below:
2 CO + O2 ----> 2 CO2From the equation of the reaction, 2 moles of CO are required to react with 1 mole of O2 to produce 2 moles of CO2
The moles of the reacting substances is calculated using the formula:
moles = mass/molar massMolar mass of CO = 28 g
Moles of CO = 112/28 = 4 moles
Molar mass of 02 = 32 g
Moles of O2 = 32/32 = 1 mole
Therefore, oxygen gas, O2 is the limiting reactant and 2 moles of CO remain unreacted.
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Help me please im stuck
Answers
Answer:
1. mechanical energy
2. Kinetic energy
3. Energy
4. Work
5. potential energy
Explanation:
1. The total amount of mechanical energy is merely the sum of the potential energy and the kinetic energy. This sum is simply referred to as the total mechanical energy
2. All moving objects have kinetic energy. When an object is in motion, it changes its position by moving in a direction: up, down, forward, or backward.
3. Energy is defined as the ability to cause changes in matter. You can change energy from one form to another when you lift your arm or take a step. In each case, energy is used to move matter — you. The energy of moving matter is called kinetic energy.
4. transfer of energy that occurs when a force makes an object move. For work to occur, an object must move. The motion of the object must be in the same direction as the applied force on the object.
5. potential energy is the energy that is stored in an object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height.
A gas has a pressure of 326 mm Hg at 20 degrees Celsius. What is the temperature at 52.4 k Pa?
Answers
Answer:
it's is math that you can answer with your sister and your mother
Answer:
346 degrees because 326+20= 346
Which are characteristics of photosynthesis? (Select all that apply.) Oxygen is provided to animals from this process. It takes place in the flower of a plant. Plants use this process to make their food. It provides the energy that we obtain from our food.
Answers
Answer:
2 , 3 and 4
Explanation:
hope this helps you
Which coefficients correctly balance the formula equation below? NH 4 NO 2 (s) N 2 (g)+H 2 O(l) A. 1, 2, 2 C. B. 2, 1, 2 D. 1, 2, 1 1, 1, 2
Answers
The coefficients which correctly balance the formula for the equation of reaction of NH₄ and NO₂ is 1,1,1,2.
What is a Balanced Chemical reaction?This is the type of reaction in which the atoms of the elements of the reactants equal that of the product.
The balanced reaction is seen below where 2 was added to H₂O so as to balance the atoms of oxygen on both sides.
NH₄ + NO₂ (s) ⇒ N₂ (g)+2H₂O(l)
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A chemical reaction needs to occur at a certain temperature, but one liquid is coming from a reactor at a much hotter temperature. what might be used to cool the liquid? question 3 options: cooling pool steam turbine heat exchanger boiler
Answers
The medium that might be used to cool the hot liquid coming from a reactor is : ( C ) Heat exchanger
Function of the heat exchangerHeat exchanger is used for the transfer of heat between liquids to be used in a chemical reaction, It can be used for both Cooling and heating to achieve the desired temperature.
The liquid coming from a reactor which posses a very high temperature will be passed through the heat exchanger so that its temperature will attain the required temperature for the experiment.
Hence we can conclude that The medium that might be used to cool the hot liquid coming from a reactor is Heat exchanger.
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4. How many atom are in
C3H5(NO3)3
Answers
Answer:
carbon = 3
hydrogen=5
nitrogen=3
Oxygen=9
What type of substance is water?
Question 17 options:
molecule
mixture
element
compound
Answers
What does a pH of 13.8 mean
Question 8 options:
The solution is acidic
Impossible to tell from the information provided.
The solution is a strong base
The solution is basic
Answers
A solution with a pH of 13.8 means that the solution is a strong base.
What is pH?pH refers to power of hydrogen. The pH is a scale used to measure the degree of acidity or alkalinity of a solution.
pH scale ranges from 0 - 14
Where;
0 -6.9 indicates acidic7.1 - 14 indicates basicHowever, the closer the pH value is to 1, the more the acidity and vice versa while the closer it is to 14, the more the alkalinity and vice versa.
Therefore, a solution with a pH of 13.8 means that the solution is a strong base.
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It's sunny in New York, but it is cool. Where would you expect to find this lizard during the day? Question 16 options: Under a rock In a damp stream bed Basking in a sunny spot In a hole in the ground.
Answers
It's sunny in new york, but it is cool, we will expect to find lizard under a rock or in a hole in the ground, where temperature is more than outside.
Why lizards are not comfortable in cold?Lizards are not easily survive in the winter season as they are cold blooded animal, so their body will not active in the winter season.
During the winter season or in the cold weather, lizards will go to the places where they feel less cooling. And these places be like inside the rocks, under a hole, under the ground, in the trunks of trees, etc. due to high temperature.
Hence, options (1) and (4) are correct.
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How would you describe the temperature of an object that has very slow moving particles?
Answers
Ice is an example of solid cold object that has very slow moving particles.
A group of students observed a sample of soil and recorded their observations.
reddish-brown color
don’t need a magnifying glass to see grains
gritty when dry
sticks to my fingers when wet
doesn’t smell like anything
dries quickly
does not get foamy with vinegar
damp soil made a ball but it fell apart quickly
What type of soil did the students observe? Use evidence from the students’ observations to support your answer.
Answers
Based on the observations of the students, the soil they observed appears to be a sandy soil.
What is Foamy?
Foamy refers to the presence of bubbles or foam in a liquid or substance. It can be caused by a variety of factors, such as agitation, the presence of certain chemicals, or the release of gases. In the context of the soil observation mentioned earlier, the lack of foamy reaction with vinegar suggests that the soil does not contain a significant amount of carbonates, which are a common cause of foaming when they react with acids.
Evidence to support this includes the fact that the soil is gritty when dry and sticks to their fingers when wet, which are both common characteristics of sandy soil. Additionally, the observation that the soil does not get foamy with vinegar suggests that it does not contain a lot of organic matter, which is another characteristic of sandy soil. Finally, the fact that the damp soil made a ball but it fell apart quickly suggests that the soil does not have a lot of clay, which is another characteristic of sandy soil.
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8
Atomic #?
Atomic mass?
# of neutrons?
O
Oxygen
15.999
Answers
Answer:
eight because I think it's eight
What effect will doubling the initial concentration of crystal violet have on the rate
Answers
When the initial concentration of crystal Violet is double, the rate of the reaction will rise up about four times the initial rate.
What is the rate of chemical reaction?The rate of a chemical reaction refer to the rate of change in concentration of the reaction over the change in time. Introduction.
When you double the concentration the rate doubles. The rate is proportional to the square of the concentration of a reactant. When the rate is doubled the concentration rate goes up four times. The rate is not affected by the concentration of a reactant.
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When doubling the initial concentration of crystal violet, the rate will increase four times.
What is the effect of concentration on the rate of a reaction?The rate doubles when the concentration is doubled.
The rate is proportional to the square of a reactant's concentration. When the concentration is doubled, the rate increases fourfold.
The concentration of a reactant has no effect on the rate.
Thus, when doubling the initial concentration of crystal violet, the rate will increase four times.
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(a) what is the approximate ductility (%el) of a brass that has a yield strength of 230 mpa (33360 psi)?
Answers
Based on the calculations, the approximate ductility (%el) of this brass is equal to 2.3%.
Given the following data:
Yield strength = 230 mpa (33360 psi).What is ductility?Ductility can be defined as an important property of a material which determines its ability to become elongated due to the application of stress.
Mathematically, the ductility of a material can be expressed as percentage elongation in length:
[tex]\% el = \frac{\Delta L}{L_i} =\frac{L_f - L_i}{L_i}[/tex]
Where:
[tex]L_i[/tex] is the original length.[tex]L_f[/tex] is the final length.[tex]\Delta L[/tex] is the yield strength.For this exercise, let us assume the original length of this brass is equal to 100 meters.
Substituting the parameters into the formula, we have;
[tex]\% el = \frac{230}{100}[/tex]
Ductility = 2.3%.
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The approximate ductility (%el) of a brass that has a yield strength of 230 mpa is 2.3%.
How do we calculate the approximate ductility?Approximate ductility of any substance will be calculated by using the below equation as:
%el = ΔL / L₁, where
ΔL = yield strength = 230 MPaL₁ = initial length = 100 MPa (assume)On putting this values, we get
%el = 230/100 = 2.3%
Hence 2.3% is the approximate ductility.
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How many moles of each atom are there in 5 moles of cu3(po4)2
Answers
The number of moles of each atom present in 5 moles of Cu₃(PO₄)₂ are:
15 moles of Cu10 moles of P40 moles of ODescription of Cu₃(PO₄)₂1 mole of Cu₃(PO₄)₂ contains 3 moles of Cu2 moles of P(2×4) = 8 moles of OHow to determine the mole of each atomThe moles of atom present in 5 moles of Cu₃(PO₄)₂ can be obtained as follow
For Cu1 mole of Cu₃(PO₄)₂ contains 3 moles of Cu.
Therefore,
5 moles of Cu₃(PO₄)₂ will contain = 5 × 3 = 15 moles of Cu
For P1 mole of Cu₃(PO₄)₂ contains 2 moles of P.
Therefore,
5 moles of Cu₃(PO₄)₂ will contain = 5 × 2 = 10 moles of P
For O1 mole of Cu₃(PO₄)₂ contains 8 moles of O.
Therefore,
5 moles of Cu₃(PO₄)₂ will contain = 5 × 8 = 40 moles of O
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The number of moles of copper, phosphorous and oxygen present in the 5 moles of Cu₃(PO₄)₂ are 15, 20 and 40 respectively.
What is stoichiometry?Stoichiometry of any chemical equation gives idea about the amount of species present before and after the reaction.
Dissociation reaction of Cu₃(PO₄)₂ is shown as below:
Cu₃(PO₄)₂ → 3Cu²⁺ + 2PO₄³⁻
From the stoichiometry of the equation, it is clear that:
1 mole of Cu₃(PO₄)₂ produces 3 moles of copper atom, 2 moles of phosphorous atoms an 8 moles of oxygen atom.
5 moles of Cu₃(PO₄)₂ = produces 3×5=15 moles of Cu
5 moles of Cu₃(PO₄)₂ = produces 2×5=10 moles of P
5 moles of Cu₃(PO₄)₂ = produces 8×5=40 moles of O
Hence required moles of copper, phosphorous and oxygen are 15, 20 and 40 respectively.
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If a buffer is composed of 33. 80 ml of 0. 164 m acetic acid and 31. 63 ml of 0. 189 m sodium acetate, how many ml of 0. 100 m hcl can be added before the buffer capacity is reached?
Answers
For a buffer is composed of 33. 80 ml of 0. 164 m acetic acid and 31. 63 ml of 0. 189 m sodium acetate,The volume of HCl is mathematically given as
v1=70.1148mL
What volume of HCL can be added before the buffer capacity is reached?Generally, the equation for the Chemical reaction is mathematically given as
HCl+CH3Coo-Na---->CH3CooH+NaCl
Therefore
Mole of HCl=34.37*0.204*10^-3
Mole of HCl=7.011*10^-{-3}
In conclusion
M1v1=m2v2
Therefore
[tex]v1=\frac{m2v2}{m1}\\\\v1=\frac{7.011*10^-{-3}}{0.1}[/tex]
v1=70.1148mL
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70.114 ml of 0. 100 m HCl can be added before the buffer capacity is reached
What is volume?Volume is the space occupied by a three-dimensional object.
The chemical reaction is
[tex]\rm HCl+CH_3Coo-Na---- > CH_3CooH+NaCl[/tex]
step1, calculate the moles of HCl
[tex]34.37 \times0.204\times 10^-3[/tex]
[tex]\rm Moles\; of\; HCL \;7.011\times 10^{-3}[/tex]
The given Volume 1 is 33.80 ml
The given volume 2 is 31.63 ml
By the formula, [tex]M_1V_1=M_2V_2[/tex]
Putting the values in the equation
[tex]0.164 \times 33.80 = 100 \times V_2\\\\V_2 = 70.114 ml.[/tex]
Thus, the final volume is 70.114 ml.
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v1=70.1148mL
Explain why natural resources are not distributed equally across Earth.
Answers
In which situation might a forensic scientist decide to collect fiber evidence from a crime scene?
if collection with a paper bag or sheet of paper isn’t feasible
if there’s a risk of the evidence getting lost if it is transferred on other objects
if there’s a likelihood that fiber evidence exists at the scene of a crime
if there are multiple crime scenes with fiber items that need to be transported
Answers
Answer: C
Explanation:
C just because the other choices dont really make sense. They use these fibers as a way to see what clothes, shoe strings, carpets, etc was there it help identify a person at the scene. Hope this helps!!
Which statement best describes the organization of the Periodic Table of the Elements?
A. Elements within a period have the same number of electrons.
B. Gases easily form compounds with other elements.
C. All gases are grouped together.
D. Elements within a group have similar properties
Answers
D. Elements within a group have similar properties.
Why are xrays used to probe the crystal structure of a material
Answers
Answer:
Because X-rays have wavelengths similar to the size of atoms
X rays are used to probe the crystal structure of a material because this have same wavelength as atoms of crystal have.
What are x rays?X rays are the type of electromagnetic radiations and it is produced when the fast moving electron collide with the target anode and sudden deceleration takes place.
X rays have the high energy so that it easily penetrate in any crystal molecule as they also have same wavelength as atoms of the crystals have.
Hence due to high energy and same wavelength was of atoms of crystal it is used to probe the crystal.
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Find δg o for the following reaction, using δh o f and s o values. H2(g) i2(s) → 2 hi(g)
Answers
The standard change in free energy is -35.76 kJ/mol. Values of standard free energy are obtained from thermodynamic tables.
What is the standard change in free energy?The standard change in free energy can be obtained using the relation;
ΔG°= ΔH° - TΔS
When;
ΔH°f(HI) = 26.466 kJ/mol
ΔH°f(H2) = 0 kJ/mol
ΔH°f(I2) = 0 kJ/mol
ΔS°f(HI) = 221.63 J/K/mol
ΔS°f(H2) = 145.64 J/K/mol
ΔS°f(I2) = 0 J/K/mol
Hence;
ΔH°freaction = [ 2(26.466)] - 0
= 52.932 kJ/mol
ΔS°freaction = [2(221.63 ) ] - [145.64 + 0]
= 443.26 - 145.64 = 297.62 J/K/mol
ΔG°= 52.932 * 10^3 - [298 * 297.62 ]
ΔG°= -35.76 kJ/mol
The standard change in free energy is -35.76 kJ/mol.
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The change in free energy for the given chemical reaction between hydrogen and iodine gas is -31.068 kJ/mol.
How do we calculate the free energy change?Free energy change of any reaction will be calculated by using the below equation:
ΔG° = ΔH° - TΔS, where
ΔH° = change in enthalpy
T = absolute temperature = 298K
ΔS = change in entropy
Change in any quantity during the reaction will be find out by substracting the reactant values from product values.
Given chemical reaction is:
H₂(g) + I₂(g) → 2HI(g)
ΔH° = 2(26.466)] - 0 = 52.932 kJ/mol
ΔS = [2(206.6) ] - [131 + 0] = 413.2 - 131 = 282.2 J/K.mol = 0.282 kJ/K.mol
On putting values on above equation, we get
ΔG° = 52.932 - (298)(0.282) = -31.068 kJ/mol
Hence required free enrgy is -31.068 kJ/mol.
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Water is constantly being _____________.
Answers
Answer:
Cycle
Explanation:
Water on the earth is constantly on the move, it recycles over and over again. This movement is called the water cycle. Precipitation occurs when there is so much water in the air it cannot hold onto it anymore. It will rain, snow, sleet or hail. It fills up our lakes, streams and oceans on the surface of the earth.
What is the best definition of the enthalpy of formation, A HA?
A. The energy released when products form in a reaction
B. The energy absorbed when products form in a reaction
C. The energy required for a molecule to form from its elements
D. The energy required for an atom to form from its subatomic
particles
Answers
Answer:
I guess the answer ia point A
What is the relationship between the electron configuration of an element and the period in which that element appears in the periodic table?.
Answers
Answer:
The links are: the number of circles in the electronic configuration of an element is represented in the periodic table as the period number that element is situated in. the number of electrons in the outermost shell of an element is represented in the periodic table as the group number that element is situated in.
Explanation:
Why do we balance chemichal reactions
Answers
Answer:
We balance chemical equations due to the law of conservation of mass, which states that mass can neither be created or destroyed. Therefore, in a chemical reaction, the total mass of the reactants must be equal to the total mass of the products. Balancing equations accounts for the total mass of the reactants and the total mass of the products.
Explanation:
We balance chemical equations due to the law of conservation of mass, which states that mass can neither be created or destroyed. Therefore, in a chemical reaction, the total mass of the reactants must be equal to the total mass of the products. Balancing equations accounts for the total mass of the reactants and the total mass of the products.
Answer:
to satisfy the law of conservation of matter.
the law of conservation states that matter can not be created nor destroyed.
a total of 1.4 moles of sodium nitrate is dissolved in enough water to make 2.0 liters of an aqueous solution. the gram-formula mass of sodim notrate is 85 grams per mole. determine the molarity of the solution
Answers
Answer:
1.4 moles/ 2.0 L= 0.7 M
Explanation: Molarity= moles of solute/ Liters of solution
therefore just plug the numbers in and you'll find the molarity to equal. 0.7
The world is divided into large areas based on their average temperatures and precipitation. what are these areas called?
climate continents
climate zones
global areas
global regions
Answers
The world is divided into large areas based on their average temperatures and precipitation is called climate zones.
What is climatic zone?The principal zones that are demarcated by lines of latitude due to which the earth can be divided on the basis of climate. Tropical zone, Subtropics zone, Temperate zone and Cold zone are the four types of climatic zones.
So we can conclude that large areas based on their average temperatures and precipitation is called climate zones.
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The world is divided into large areas called climate zones based on their average temperatures and precipitation.
What are climate zones?Climate zones are areas of the Earth that results from differences in climate such as temperature, humidity, amount of precipitation etc.
Climate zones of the globe are as follows:
Temperate Arctic or polarSubtropical TropicalTherefore, it can be said that the world is divided into large areas called climate zones based on their average temperatures and precipitation.
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Select the correct answer below that correctly describes what a Arrhenius Acid Base reaction is.
Question 1 options:
An acid base reaction where one compound increases the amount of H+ or OH- in solution.
An acid base reaction where one compound is donating an H+ and one atom is accepting an H+
An acid base reaction where one compound is donating electrons and another compound is accepting electrons.
An acid base reaction where one compound is donating an OH- and one atom is accepting an OH-.
Answers
From the options, the statement ththat describes an acid - base reaction in the Arrhenius sense is; "an acid base reaction where one compound is donating an H+ and one atom is accepting an H+."
What is the Arrhenius definition?The Arrhenius definition of a base is that a base is a substance that releases hydroxide ions as its only negative ions in solution. An acid is a substance that produces hydrogen ions as its only positive ions in solution.
If we look at the definitions shown here, the only one that accurately depicts acid - base reaction in the Arrhenius sense is "an acid base reaction where one compound is donating an H+ and one atom is accepting an H+."
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Write a paragraph, citing examples from the text, to explain how Dr.
Paul Chirik's process could result in the development of flexible
manufacturing technologies.
Answers
Paul J. Chirik developed methods associated with chemistry catalysis and transition metals, which may result useful for the development of manufacturing technologies.
What is catalysis?Catalysis refers to the chemical processes that increase the rate of different types of reactions by lowering its activation energy.
Proteins (enzymes) are biological catalysts that increase the rate of chemical reactions in biological systems.
Catalysis may be reached by using transition metals (e.g., actinium and rutherfordium), which result useful in the development of manufacturing technologies.
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