Classification of each statement about electromagnetic radiation:
True statement:
(2) The product of the frequency and wavelength of electromagnetic radiation is constant.
(3) The light from the sun includes multiple types of electromagnetic radiation.
(4) X-ray radiation has shorter wavelengths than microwave radiation.
False statement:
(1) Visible light has a lower frequency than infrared radiation.
(5) X-ray radiation has more energy than gamma radiation.
(6) The speed of electromagnetic radiation varies with frequency
What is electromagnetic radiation?Waves-based radiation that has an electric and magnetic field. It derives from both natural and artificial sources. From low energy to high energy, electromagnetic radiation can have different intensities. It consists of x-rays, gamma rays, infrared, visible, and ultraviolet light as well as radio waves and microwaves.
Radio waves, microwaves, infrared, ultraviolet, gamma, and x-rays are all types of EM radiation. Cosmological sources (such as the sun and stars), radioactive substances, and man-made gadgets are some examples of sources of EM radiation. The dual wave and particle character of EM are evident.
True Statements:
The product of the frequency and wavelength of electromagnetic radiation is constant and equal to speed of light.The light from the sun includes multiple types of electromagnetic radiation which are radio waves, micro waves, infrared waves, visible light, x rays and gamma rays.X-ray radiation has shorter wavelength than microwave radiation.False Statements:
Visible light has lower frequency than infrared radiation.The speed of electromagnetic radiation varies with frequency.X-ray radiation has more energy than gamma radiation.To know more about electromagnetic radiation refer to:
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The complete question is as follows:
Classify each statement about electromagnetic radiation as true or false: Visible light has a lower frequency than infrared radiation The product of the frequency and wavelength of electromagnetic radiation is constant, The light from the sun includes multiple types of electromagnetic radiation X-ray radiation has shorter wavelengths than microwave radiation, X-ray radiation has more energy than gamma radiation The speed of electromagnetic radiation varies with frequency
This rock known as balanced rock sits on thin spike of rock in a canyon in Idaho explain the forces that keep the rock balanced on its tiny pedestal
Answer:
Action force and Reaction force
Explanation:
The action force which is the balanced rock pushing down due to gravity and the reaction force pushing the equal amount of force. These two things are stated in Newtons third law, where he states that "Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first." Also, he states that "all forces acts in pairs," meaning that every force exerted, there is an opposite force on the first
a _______ is a type of mixture where at least one of the components is a mixture
Answer: Alloys, such as steel which is made from a mixture of iron and carbon.
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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10. Calcium sulfide (CaS) is insoluble in water: Why ? would positive because the ion-C ~dipole interactions are If CaS were to dissolve. 4H very weak compared to the ion-ion interactions being overcome: Salts containing Ca?* are never soluble in water: The covalent bonds in CaS would require a great deal of energy t0 overcome upon dissolving. If CaS were t0 dissolve, 4S would be negative because the possible arrangements for the water molecules would decrease:
Calcium is a exceptionally reactive steel that reacts violently in a much less way with water. When calcium reacts with water, it has a tendency to displace hydrogen from the water.
Along with this, it produces bubbles of hydrogen fueloline in addition to calcium hydroxide. Therefore, an appropriate choice to this query is (D) (iii) and (iv).This is a binary compound and it's far an ionic compound, that is polar ionic compounds which might be polar in nature need to be quite simply soluble in water, however this calcium sulfide is stated to be insoluble in water. So the motives for that is for an ionic compound, that is collar to be soluble.
The calcium carbonate will dissolve withinside the acid generating CO2 fueloline. It will now no longer dissolve in natural water.If CaS had been to dissolve, AH could be high-quality due to the fact the ion-dipole interactions are very vulnerable as compared to the ion-ion interactions being overcome.
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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!
________
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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If light has a lot of energy; it will have: A) A small frequency B) A small wavelength C) Low speed D) High speed E) A small number of photons
The light has lots of energy then they have small wavelength as energy increase wavelength decreases.
The quantity of strength is without delay proportional to the photon's electromagnetic frequency and thus, equivalently, is inversely proportional to the wavelength. The better the photon's frequency, the better its strength. Equivalently, the longer the photon's wavelength, the decrease its strength.You have to have observed that the because the frequency increases, the wavelength decreases.
The identical dating exists with one-of-a-kind colored mild waves. You have to be aware the identical connection among the frequency and the wavelength. The frequency of a wave is inversely proportional to its wavelength. That method that waves with a excessive frequency have a quick wavelength, whilst waves with a low frequency have an extended wavelength. Light waves have very, very quick wavelengths.
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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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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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a piece of magnesium metal is placed in a solution of hydrochloric acid, resulting in the formation of hydrogen gas and a solution of magnesium chloride. the class of this reaction is
The class of this reaction is single displacement reaction resulting in the formation of hydrogen gas and a solution of magnesium chloride.
What is single displacement reaction?
A single replacement reaction, commonly called a single displacement reaction, is a reaction in which one element is substituted for another element in a molecule. The initial materials are always pure elements, such as a pure zinc metal or hydrogen gas, plus an aqueous compound.
When Magnesium reacts with hydrochloric acid , the equation is balanced as
[tex]Mg (s) + 2HCl(aq) ------ > MgCl2(aq) + H2(g)[/tex]
Due to its higher reactivity, magnesium metal replaces H from acid to form H2 gas.
Therefore, it is a single displacement reaction.
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Which THREE answer choices are CORRECT?
What answer choice is correct for 21?
What answer choice is correct for 14?
What answer choice is correct for 11?
What answer choice is correct for 4?
21) The correct description of the compounds are options a b c.
14) The correct chemical names are b c d
11) Li forms an ionic compound with fluorine
4) The ending of name (c) would differentiate the two compounds.
The functional group on the chain is carboxyl (a)
What is the structure of a compound?We know that the structure of the compound would have to do with the way that the compound can be written. In this case, we have the compound that have been shown and then we have some statements about the molecules.
We must note that the structures show us how the atoms that are in the compounds can be arranged and then we can be able to deduce the structure of the molecule that has been shown.
The compound on the right hand side is a cyclic compound while the compound on the left hand side is a long chain compound. We can now be able to count up the number of the hydrogen and the carbon atoms that are present in each of the compounds.
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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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point What type(s) of intermolecular forces are present between two molecules of CS2 Check all that apply: Hydrogen bonding London dispersion forces Dipole-dipole attractions
The intermolecular force that are present between two molecules of CS2 is London dispersion forces.
What is intermolecular force?
An intermolecular force is the force that mediates the interaction of molecules, including electromagnetic forces of attraction or repulsion that act between atoms and other types of neighboring particles.
What is London dispersion forces?London dispersion forces are a form of intermolecular force that acts between electrically symmetric atoms and molecules; that is, the electrons are symmetrically dispersed with respect to the nucleus.
The intermolecular force that are present between two molecules of CS2 is London dispersion forces.
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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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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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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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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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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.
Choose the correct names of all possible isomers of dimethylcyclobutane molecule. Select all that apply.
O 1,1-dimethylcyclobutane
O 2,3-dimethylcyclobutane
O 1,2-dimethylcyclobutane
O 2,2-dimethylcyclobutane
O 1,3-dimethylcyclobutane
O 1,4-dimethylcyclobutane
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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How many grams of chromium metal are plated out when a constant current of 8.00 a is passed through an aqueous solution containing cr3 ions for 320. minutes?
11.59 g chromium metal is plated out.
For example, Cr3+ requires 3 Faradays to plate 1 mole of Ion with charge 3+.
Faraday's constant states that there are 96500 C mol1 of electric charge in a mole.
19200 seconds are left in the given amount of time (320 minutes). coulombs equal 8 x 19200 coulombs per amps per second.
Cr's molar mass is 51.9961 g, or 96500 x 3 coulombs plates. To plate out 11.59 g of chromium metal, multiply 51.9961g Cr by 8 x 19200 coulombs, which results in 51.9961/(96500 x 3) x 8 x 19200 g Cr.
A pure material made entirely of one species of atoms, or a chemical element, is a species of atoms with a specific number of protons in their nuclei. Chemical elements, unlike chemical compounds, cannot be reduced through any chemical reaction into less complex molecules. An element's distinguishing characteristic is its atomic number, which is denoted by the symbol Z. Atoms of the same element are all represented by the same atomic number. [1] In the universe, chemical elements make up the majority of the baryonic matter (among rare exceptions are neutron stars)
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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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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
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
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.
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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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Balance the following nuclear equations
There can be emissions of radiations like gamma radiation. There can be emission of particles too like alpha particle. Therefore, the blanks can be filled using ₁H¹ and ₁₅P³⁰ .
What is nuclear decay?Nuclear decay is process in which the radioactive element releases particles or radiations. Alpha particles is ⁴₂He. Alpha particle is nothing but helium particle.
The balanced nuclear equation for the given reaction can be given as
₃Li⁷ + ₁H¹ [tex]\rightarrow[/tex] 2 ₂He⁴
₁₃Al²⁷ + ₂He⁴ [tex]\rightarrow[/tex] ₁₅P³⁰ + ₀n¹
Therefore, the blanks can be filled using ₁H¹ and ₁₅P³⁰
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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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write the chemical formula for the conjugate acid of the aniline, c6h7n. (enter the elements in the order: c, h, n, o.)
The chemical formula for the conjugate acid of the aniline: Phenylammonium ion (C₆H₅NH₃⁺).
What is conjugate acid?Conjugation, also known as a verbal paradigm, derives from the Latin meaning "link together" and relates to the inflection of verbs for the person, number, tense, and mood.
A conjugate acid has one extra H atom and one more (+) ve charge than the base from which it was created. When an acid contributes a proton to a base, conjugate acid is created. A conjugate base has one fewer H atom and one more (-) ve charge than the acid from which it was produced.
Thus, the chemical formula for the conjugate acid of the aniline: Phenylammonium ion (C₆H₅NH₃⁺).
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