A solute's solution's molarity directly relates to the freezing point depression; the higher the molarity, the greater the depression. So, as the temperature drops. First, 0.001M NaCl freezes, 1M NaCl freezes.
Molarity: What is it?
The moles of solute every liter of solution is measured as molarity. For instance, when table salt is dissolved in water, both salt and water serve as the solute.
What does a solution's molarity mean?
Molarity (M), which is determined by dividing the solute's mass in moles by the volume of the solution in liters, is the most widely used unit to express solution concentration: liters of solution/moles of solute equals M. One liter of a solution with a 1.00 molar concentration (1.00 M) contains 1.00 moles of solute.
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Why is CuSO_3 called copper (II) sulfite?
The Cu in the formula is where the Copper is found. The (II) is derived from the complex's copper's oxidation number. The SO3 ion is the source of sulfite.
Describe copper (Cu).
The chemical element copper (Cu) is a reddish, incredibly ductile metal belonging to Periodic Group 11 (Ib) that has an exceptional ability to conduct heat and electricity. In nature, copper can be found in its free metallic state.
What is the primary usage of copper?
Due to its ductility and excellent conductivity, copper is mostly used in electrical generators, home and auto wiring, and the wires in electronics like radios, TVs, computers, lighting, and motors.
What are the top 3 fascinating copper-related facts?
The 179,000 pounds of copper used to construct the Statue of Liberty. 400 pounds of copper are used in a typical home's electrical wiring, plumbing, and appliances. A typical automobile contains 50 pounds of copper. Every gold has a level of copper, even 24karat gold.
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A silver-colored metal is placed in a blue solution. After a few minutes, a red coating forms
on the metal and the solution turns clear. Which best describes the products of this
reaction?
The reaction when silver metal is coated with red color after the reaction is known as displacement reaction.
The silver colored metal is coated with red color after reaction so the coating is a single element which is displaced by the silver colored reactant and the silver colored metal will form a compound because it displaces the red colored metal. So the products are a single metal and a compound and the reaction is displacement reaction.
Thus, the reaction describes a displacement reaction.
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two metals of equal mass but with differing specific heat capacities are subjected to the same amount of heat. which metal will undergo the smallest change in temperature if neither metal changes phase?
The metal having the greater capacity for specific heat. A metal with a higher heat capacity will take more energy to raise its temperature by one temperature unit.
Can the amount of heat in two things made of the same material at the same temperature differ?As a result, the heat capacity of two objects constructed of the same material but of different masses will vary. This is so because while specific heat is a property of every object constructed of the same material, heat capacity is a property of an object.
Which metal will see the smallest temperature increase?The metal with the highest specific heat will see the smallest temperature change.
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which fields are significantly involved in food engineering?
Answer:
math and science
Explanation:
Math , science (biology, chemistry and physics) with advance courses in food chemistry, microbiology, food processing operation and engineering design.
2. in the e2 reaction, what was the percentage of 1-butene product formed? explain why the percentage of 1-butene formed was higher in the e2 reaction compared to the e1 reaction.
in the e2 reaction, the percentage of 1- butene formed in E2 was 20.7%.
The E2 reaction is the title given to the one-step process, and the E1 reaction to the two-step mechanism. The numbers represent the kinetics of the reaction rather than the number of steps in the mechanism: E2 is bimolecular (second-order), whereas E1 is unimolecular (first-order). The three key variables that affect E1 elimination reactions are the solvent type, the leaving group's shape, and the carbocation's stability.
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you dissolve 1.112 grams of iron (iii) chloride into enough water to make 500.00 ml of solution. calculate the molarity of this iron (iii) chloride solution.
The molarity is 0.00024 g/l for the 1.112 grams of iron (iii) chloride into enough water to make 500.00 ml of solution.
The maximum not unusualplace manner to specific answer attention is molarity (M), that's described as the quantity of solute in moles divided through the extent of solution in liters: M = moles of solute/liters of /solution.
Here we have the mass of iron (iii) chloride = 1.112 grams.volume of water is = 500.00 ml for molarity = mass of solute/ volume of solution in litres. M = 1.112 / 500.00 = 0.00024 g/L.Molarity (M) of the iron (iii) chloride solution is 0.00024 g/L.Read more about iron;
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The boiling point of the fluoromethane (CH3F) is higher than that if fluorine has (F2). Identify the point differences in terms of intermolecular forces? meant to say: The boiling point of the fluoromethane (CH3F) is higher than that of fluorine (F2). Identify the point differences in terms of intermolecular forces?
The boiling point of the fluoromethane (CH3F) is higher than
Diflourine (F-F).
What are the point differences in terms of intermolecular forces?
1. London dispersion forces:
The London dispersion exerts a force of between all molecules. The intensity of the LDF is proportional to the polarizability of the molecule, which depends on the number of electrons and the surface area of the molecule. In the past, the London Scattered Force has been the weakest of the three van der Waals forces. Contrary to what some teachers and some authors say, London dispersion forces are often stronger than Keysome or Debye forces, surpassed only by hydrogen bonding. Some teachers are guilty of telling students that the strength of the London dispersion force depends on its molar mass. This is just a coincidence. Understand, however, that molar mass is not the reason for the fluctuations in the strength of the London dispersion force.
2. Keesom forces (dipole-dipole attraction):
The force by which one polar molecule attracts another polar molecule. The oppositely charged ends of the molecule experience electrostatic attraction.
3. Debye forces (induced attraction) :
The attractive force between polar and nonpolar molecules, where the polar molecule induces charge separation in the nonpolar molecule. Debye forces can exist between two polar molecules, even for similar molecules. In such cases, the induced charge can temporarily increase or decrease the material's dipole moment.
4. Hydrogen Bonds
A weak covalent bond between a hydrogen atom of a molecule attached to an N, O, or F and an N, O, or F of an adjacent molecule. A hydrogen atom acts as a bridge and forms a bond between two molecules. Hydrogen bonding is more than electrostatic attraction between molecules, instead there is evidence of orbital overlap and covalent bond formation.
Therefore, The boiling point of the fluoromethane (CH3F) is higher than
Diflourine (F-F).
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if the half-life of a radioactive element is 18 days, what percentage of the original sample would be left after 108 days?
First-order kinetics governs the nuclear decay of the sample's original mass of 25,0 g. Percentage of original sample remained after 108 days is 1.5625%
What exactly does nuclear decay mean?An fragile atomic nucleus produces subatomic particles on its own through a number of different processes known as radioactive decay. It is said that a daughter nucleus is created when the parent nucleus decays.
Given;
t 1/2 = 18 days;
t = 108 days;
Amount of remaining radioactive element
R = , where n =
⇒n= 108/18
n= 6;
= 0.015625
⇒ Percentage of original sample remained , × 100 = 1.5625 %
Half life Of Radioactive Element is 18 days
Percentage of original sample remained after 108 days is 1.5625%
Why do nuclear atoms decay?Whenever a reduced nuclear configuration to that they can transition is present, atoms radioactively decay. The real decay of a single atom occurs at random and is not due to the atom aging or changing over time.
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Which of the following is the disadvantage(s) of hydrogen? a) Inflammability b) Leaking c) Explosive limit d) All of the mentioned.
Answer:
d
Explanation:
both of them are true according to me
six test tubes are placed in a rack. to all six tubes you add 1 ml of water. then 1 ml of serum is added to the first tube and mixed well. you then transfer 1 ml of that to the second tube and again mix well. you continue the transfer of 1 ml of mixture from one tube to each subsequent tube, finally discarding 1 ml from tube 6. what is the final dilution of serum contained in tube 6? sketch the process and show your calculations
The final dilution factor of serum contained in tube six is 64.
Dilution is the process of adding solvent to a solution. The concentration of the solution will change according to the equation
V₁ M₁ = V₂ M₂
where
V₁ = the volume before dilutionM₁ = the concentration before dilutionV₂ = the volume after dilutionM₂ = the concentration after dilutionThe dilution factor = M₂ ÷ M₁
The problem didn't give information the concentration of serum. Suppose the initial serum concentration is M.
In tube #1
1 mL serum M1 mL waterV total = 2 mLM₁ = the concentration in tube #11 × M = M₁ × 2In tube #2
1 mL mixture 0.5M1 mL water1 × 0.5M = M₂ × 2In tube #3
1 mL mixture 0.25M1 mL water1 × 0.25M = M₃ × 2In tube #4
1 mL mixture 0.125M1 mL water1 × 0.125M = M₄ × 2In tube #5
1 mL mixture 0.0625M1 mL water1 × 0.0625M = M₅ × 2In tube #6
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number of moles in 1.24x10^24 particles of carbon
Taking into account the definition of Avogadro's Number, the amount of moles present in 1.24×10²⁴ particles of carbon is 2.06 moles.
Avogadro's NumberAvogadro's number indicates that a mole of any matter has the same number of particles or entities (usually atoms or molecules). Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.
Number of moles of carbonThen you can apply the following rule of three: if 6.023×10²³ particles are contained in 1 mole of carbon, then 1.24×10²⁴ particles are contained in how many moles of carbon?
amount of moles of carbon= (1.24×10²⁴ particles× 1 mole)÷ 6.023×10²³ atoms
amount of moles of carbon= 2.06 moles
Finally, the amount of moles present is 2.06 moles.
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give the iupac name for the following compounds.
Name Methane CH4,Butane C4H10,Acetone CH3COCH3 ,Toluene Acetylene CH3C6H5, Ethyl C2H2 ,Alcohol C2H5OH
The following compound is CH3 CH3 CH2 CH2 CH2 CH3, but what is its IUPAC name?Answer and justification A longest carbon chain in the above diagram has seven carbon atoms, as can be observed.The IUPAC nomenclature for this compound is heptane since all of the bonds are single bonds devoid of any functional groups.
What is this compound's IUPAC name, CH3 CH2 CH2 CH2 CH2 CH?When there are nine carbons, the word non is the root.Therefore, nonane is the IUPAC term for CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH3.
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A cation is a negatively charged atom.
Positively charged ions are known as cations.Negatively charged ions are referred to as anions.A charged atom or molecule is an ion.
Are atoms with anions negatively charged?Ions are any atoms or clusters of atoms with just an electric charge.Positively charged ions are referred to as cations.Ions with a negative charge are known as anion.
What distinguishes a cation from an anion?A molecule or atom that's also negatively charged is known as an anion.A positively charged atom or molecule is referred to as a cation.Ions include both anions and cations.
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the combustion of carbon disulfide with oxygen forms carbon dioxide and sulfur dioxide. what are the coefficients when the reaction equation is balanced using the simplest, whole number coefficients? the pink spheres represent sulfur atoms, the black spheres carbon atoms and the open spheres, oxygen atoms.
Fuel consumption and other atoms than carbon and hydrogen, such as sulfur, nitrogen, or oxygen, have a direct impact on carbon dioxide emissions.
What is the carbon combustion equation in words?Charcoal, a solid, and oxygen, a gas, are the reactants in the described reaction, and carbon dioxide gas is the result. It is possible to write the chemical equation as C (s) + O2 (g) CO2 (g) Q.
Carbon combustion is what kind of a reaction?Since heat is produced during the reaction, it is an exothermic reaction. As carbon and oxygen combine to generate carbon dioxide, it is a combination reaction. It is a combustion reaction because oxygen causes carbon to burn.
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how many hydrogen atoms are bonded to the carbon atom indicated with an arrow in the given structure?
Answer:
Please open the attachment to view the answer.
Explanation:
Please give the brainliest.
The correct answer is: " 4 (four)."
________
There is no 'given structure'; however, the answer may be obtainable; as follows:
Note the mnemonic device:
{"H O N C if you love molecules!"}—or, for that matter, if you love 'atoms w/in molecules'};
" H O N C "
1 2 3 4
So: Within a molecule:
" H (hydrogen)" makes only 1 (one) single bond to another atom).
and: " O (oxygen)" makes 2 (two) bonds (each to a separate atom).
and: " N (nitrogen)" makes 3 (three) bonds (each to a separate atom).
and: "C (carbon)" makes 4 (four) bonds (each to another atom).
________
So: For a "C (carbon)" atom:
There would be 4 (four) "H (hydrogen)" atoms, since "C (carbon) atoms make 4 bonds; and "H (hydrogen)" atoms make one bond to an atom—so there would be 4 (four) separate, individual "H (hydrogen)" bonds to the "C (carbon)" atom.
← The answer is: "4 (four)."
Hope this is correct—and helpful! Best wishes!
________
lewis structure of isopropanol
The isopropanol molecule comprises a total of 11 bond three non-H bonds, one hydroxyl group, and one secondary alcohol are present in the lewis structure of isopropanol.
The most popular and commonly used disinfectant in pharmaceutics, hospitals, cleanrooms, and electronics or medical device manufacture is isopropyl alcohol (2-propanol), sometimes known as isopropanol or IPA. The arrangement of atoms and the chemical bonds that hold them together make up a molecule's chemical structure. Isopropyl alcohol quickly kills bacteria, fungi, and viruses, especially in concentrations between 60% and 90% alcohol and 10–40% filtered water. Alcohol concentrations below 50% are no longer very useful for disinfection. An empty or full bonding, antibonding, or lone pair orbital can function as a donor, as can a filled bonding or lone pair orbital.
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If the frequency factor is 1.2*10^13/s , what is the activation barrier?
The rate constant of a reaction at 33 Degrees Celsius was measured to be 5.8×10^-2 /s.
Therefore the activation barrier of this reaction is EA=84lkJ⋅mol−1, If the frequency factor is 1.2*10^13/s, The rate constant of a reaction at 33 Degrees Celsius was measured to be 5.8×10^-2 /s.
The Arrhenius equation states that
k=A⋅e−EA/R⋅T
Taking logarithm of both sides gives
lnk = lnA−EA/R⋅T
Where, the rate constant of this particular reaction
k=0.055ls−1;
The frequency factor (a temperature-dependent constant A=1.2×1013ls−1as given in the question;
The ideal gas constant R=8.314lJ⋅mol−1⋅K−1;
Absolute temperature (T=32+273.15=305.15lK) at which the reaction take place;
EA the activation barrier (a.k.a. activation energy ) the question is asking for
Solve the second equation for EA:
EA/R⋅T=lnA−lnk
EA=(R⋅T)⋅(lnA−lnk)
=(R⋅T)⋅lnA/k
=8.314lJ⋅mol−1⋅K−1⋅305.15lK⋅ln(1.2×1013s−10/055s−1)
EA=8.4⋅104lJ⋅mo−1
Therefore the activation barrier of this reaction is 84lkJ⋅mol−1
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which of the following is true about a complex ion? group of answer choices it is an ion which is not bonded to any other species. it is an ion in which a metal cation is covalently bound to one or more ligands. a complex ion is an ion in which a non-metal cation is covalently bound to one or more molecules or ions. it has many atoms bound together by ionic bonds.
The total number of donor atoms surrounding the central atom is the complex's coordination number.
Which statement about a complex ion is accurate?The total number of donor atoms around the core atom is the coordination number for a complex.[Co(NH3)4Cl2]+: Co is surrounded by 6 donor atoms. Coordination number is therefore 6.A metal ion is located in the middle of a complex ion, which is surrounded by various other molecules or ions.A metal ion is located in the middle of a complex ion, which is surrounded by various other molecules or ions.A metal ion is located in the middle of a complex ion, which is surrounded by various other molecules or ions. These can be thought of as having coordinate (dative covalent) bonds with the core ion (although in some cases, the bonding is actually more complicated than that).A complex ion is made up of a central atom, usually a cation of a transition metal, and ligand ions or molecules. These ligands can be ions like CN- or OH-, or neutral molecules like H2O or NH3.Complex coordination compounds or those that contain complex ions include, for instance, [Co(NH3)6]3+, [CoCl4(NH3)2], and [CoCl3(NH3)3].To learn more about complex ion refer to:
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Perform the following operation
and express the answer in
scientific notation.
3.2×104 x 3.0×107
[? ]×10¹²]
Enter the coefficient for the green box and the
exponent only for the yellow box.
CC
answer :
9.6x10¹¹
steps:
(3.2×10⁴)*(3.0×10⁷)=
multiply 3.2 with 3.0
3.2 x 3.0 = 9.6
add the exponents
7 + 4 = 11 so its
9.6x10¹¹
wlfrmalpha
when 1,3-cyclopentadiene, a symmetric conjugated diene, is reacted with hcl, it produces an allylic carbocation whose contributing resonance structures are ______, resulting in a single product.
When 1,3-cyclopentadiene, symmetric conjugated diene, is reacted with HCL then, it produces an allylic carbocation whose contributing resonance structures are equivalent, resulting in a single product.
What is 1,3-cyclopentadiene?Cyclopentadiene is an organic compound having the formula C₅H₆. It is abbreviated as CpH because the cyclopentadienyl anion is abbreviated Cp⁻.
This is colorless liquid and has a strong and unpleasant odor. At room temperature, cyclic diene dimerizes over the course of hours to give dicyclopentadiene. Dimer can be restored by heating to give monomer.
This compound is used mainly for the production of cyclopentene and its derivatives. It is popularly used as a precursor to the cyclopentadienyl anion (Cp−), which is an important ligand in cyclopentadienyl complexes in organometallic chemistry.
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Explain why Group 1 metals such as potassium should not be used in displacement reactions with Copper sulphate solution
Group 1 metals such as potassium should not be used in displacement reactions with Copper sulphate solution because Copper cannot displace potassium from a compound because copper is less reactive than potassium.
What is displacement reaction?A displacement reaction, also known as single replacement reaction or exchange reaction, is described as a chemical reaction in which one element is replaced by another in a compound.
Most group 1 elements react with oxygen from the air to make metal oxides.
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Give each ionic compound an appropriate name. a. SnO, b. Cr2S3, c. Rbl, d. BaBr2.
a) Tin oxide or Stannous oxide whose chemical formula is SnO and oxidation state of Sn (tin) is +2. This exists in two forms, one is stable blue-black form and other is metastable redform. b) Cr2S3 is Dichromium trisulfide where central metal atom chromium oxidation state is +3.c) Rubidium iodide is the name of the compound RbI. d) Barium dibromide is the name of the compound BaBr2. Ba (2+) has ionic interactions with two Br- ions
In order to polish glass, marble, silver, and jewelry, stannous oxide is occasionally used with lead oxide as an abrasive. In addition to being used as a weighing agent, stannic oxide is also utilized as a mordant for dying fabrics. In order to provide a translucent milky color, it is also employed as an opacifier in glazes and glass. In mouthwash and toothpaste sold without a prescription, stannous fluoride is present. During dental examinations, it's frequently applied as a preventative measure. By covering exposed dentinal tubules, according to Colgate-Palmolive, stannous fluoride lessens tooth sensitivity.
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hich label belongs in the area marked X? breathe in from atmosphere produce themselves eat other organisms absorb from soil
absorb from soil in the area marked X, breathe in from atmosphere produce themselves eat other organisms absorb from soil
What does the root absorb from the soil?Through B, roots take in water from the soil. Given that the soil environment is hypotonic, liquid will be taken by root hairs through osmosis. Passive absorption characterizes this process. Without using any energy, the water can readily flow from the higher concentration area to the low concentration.
How do soil-borne nutrients get to plants?Through root hairs at the very end of the roots, the majority of nutrients are absorbed. Super duper roots called root hairs have a vast surface area, which enables it for them to absorb more water. Most plants collaborate with various fungus to take up additional minerals from the water present in the soil.
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the value of specific heat for copper is 390 j/kg⋅c∘, for aluminun is 900 j/kg⋅c∘, and for water is 4186 j/kg⋅c∘.
By applying the law of conservation of heat energy, the equilibrium temperature is equal to 21.97°C.
Specific heat capacity of copper = 390 J/kg°C
Specific. heat capacity. of water. = 4186 J/kg°C
Specific. heat capacity. of aluminum. = 900 J/kg°C
McCc(Tc - Tc) = (MwCw + MaCa)(Tc - Twa)
0.235 × 390× (255 - Tc) = (0.825 × 4186 ) + (0.135 ×900)(Tc - 16)
Tc = 80569.95/3666.6 = 21.97
Equilibrium temperature = 21.97°C
The average kinetic energy of all of a substance's atoms or molecules is how we define a substance's temperature. A substance's particle's kinetic energy varies among its constituent parts. The distribution of the particles' kinetic energy can be used to depict it at any particular moment. Atoms and molecules move more quickly when more energy is added (heated), raising the temperature. The temperature drops as a result of the mobility of the atoms and molecules being reduced by the removal of energy (cooling). Temperature is a factor that affects the passage of heat when two bodies with differing temperatures are kept in close proximity to one another. It uses the kelvin SI unit (K).
Question:
The value of specific heat for copper is 390 J/kg⋅C∘, for aluminun is 900 J/kg⋅C∘, and for water is 4186 J/kg⋅C∘.
What will be the equilibrium temperature when a 235 g block of copper at 255 ∘C is placed in a 135 g aluminum calorimeter cup containing 825 g of water at 16.0 ∘C? Express your answer using three significant figures
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The fluoride ion is the conjugate base of the weak acid hydrofluoric acid_ The value of Kb for F is 1.39x10-11 Write the equation for the reaction that goes with this equilibrium constant: It is not necessary tO include states such as (aq'
A weak acid hydrofluoric acid's conjugate base is the fluoride ion. Kb for F has a value of 1.39x10-11.
What effects does hydrofluoric acid have on a person's body?Even at low concentrations, hydrogen fluoride gas can irritate the respiratory system, nose, and eyes. High concentrations of hydrogen fluoride inhaled, together with skin contact, can result in irregular heartbeats and fluid accumulation in the lungs, which can lead to death.
Can a person be dissolved in hydrofluoric acid?Since it is caustic, hydrofluoric acid easily disintegrates bone and tissue. Human skin is easily penetrated by HF, allowing it to decalcify bone and destroy the soft tissues underlying (hypocalcemea). Because hydrofluoric acid (HF) may dissolve glass and is a moderately corrosive to metals, it cannot be stored in glass containers.
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What’s the chemical equation for heating sodium Carbonate
Answer:
In the presence of heat, sodium bicarbonate, NaHCO3, decomposes to produce carbon dioxide, CO2, which results in the balanced reaction of 2 NaHCO3(s) + Na2CO3(s) + H2O(l) + CO2(g). In addition to its many uses, sodium bicarbonate can be utilized as a leavening agent while making doughnuts and quick bread, for example.
Hope this helps!
when 0.1 mol of a is mixed with 0.1 mol of b in the reaction chamber and the reaction runs to completion, the 1500 ml of water in the calorimeter heats up from 24.2°c to 25.9°c. what is δh° for the reaction in kj/mol?
Answer:
The answer should be a big load a fried icecream cake.
Explanation:
for the dehydrobromination of 1-bromobutane, no bubbling in the collection tube was seen after introducing heat into the system. however, bubbling can be seen in the reaction tube. what can be done to fix this situation
For the dehydrobromination of 1-bromobutane, no bubbling in the collection tube was seen after introducing heat into the system. however, bubbling can be seen in the reaction tube. to fix this situation introduce more heat in to the reaction tube.
In the dehydrobromination of 1-bromobutane, no bubbling in the collection tube was seen after the heat introduce in to system, so to fix the situation we should do : By increasing the more heat in the reaction tube we should fix this situation.
The energy given to the system is not sufficient for the reaction. so we should increase the amount of heat in to system.
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design a synthesis of 3-cyanocyclopentanol from cyclopentanol.
PCC is a selective oxidizing agent and oxidize the Alcohol to aldehyde and ketone.
CrO3 is a strong oxidizing agent and oxidize the Alcohol to Carboxylic acid.
Claisen condensation reaction gives beta keto ester.
Last reaction is an example for intramolecular Aldol condensation.
What are the applications of cyclopentanol?
(1) Cyclopentanol is used in medicines, dye preparations and spices, and can also be used as a solvent for medicines and spices.
(2) Used in organic synthesis intermediates, used in the production of medicines, dyes and spices, also used as a solvent for medicines and spices.
Therefore,
PCC is a selective oxidizing agent and oxidize the Alcohol to aldehyde and ketone.
CrO3 is a strong oxidizing agent and oxidize the Alcohol to Carboxylic acid.
Claisen condensation reaction gives beta keto ester.
Last reaction is an example for intramolecular Aldol condensation.
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the strongest interaction between atoms listed below is (a) an instantaneous dipole-dipole interaction (b) a dipole-dipole interaction (c) a hydrogen bond (d) a covalent bond
