The product of the distillation is enriched in the lower boiling liquid, The vapor is a mixture of molecules from all the volatile liquids, The vapor is enriched in the lower boiling component.
Traditional distillation, often known as distillation, is the process of removing specific elements or compounds from a liquid mixture by selectively boiling and condensing them, typically inside a still. Dry distillation, which might involve chemical alterations like destructive distillation or cracking, is the heating of solid materials to produce gaseous products (which may condense into liquids or solids). In either case, the process takes advantage of variations in the relative volatility of the mixture's components. Distillation can produce an almost completely complete separation (resulting in nearly pure components), or it can be a partial separation that boosts the concentration of certain components. Distillation, a physical separation procedure rather than a chemical reaction, is a unit operation of virtually universal importance in industrial applications.
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List the numbers and types of atoms represented by these chemical formulas.a.Fe2O3b.KMnO4c.CH3d.NH4NO3
a. Fe2O3 - two iron atoms and three oxygen atoms.
b. KMnO4 - one potassium atom, one manganese atom, and four oxygen atoms.
c. CH3 - one carbon atom and three hydrogen atoms.
d. NH4NO3 - one nitrogen atom, four hydrogen atoms, and three oxygen atoms.
In chemistry, a chemical formula is a way of representing compounds using the symbols of the elements that make up the compound. Elements are represented by atomic symbols, and the number of atoms in each element is indicated by a number after the atomic symbol.
Fe2O3 - This chemical formula describes a compound called iron oxide, also known as hematite. "Fe" stands for iron, and "2" and "3" indicate that there are two iron atoms and three oxygen atoms in the compound.
KMnO4 - This chemical formula represents a compound called potassium permanganate. "K" is potassium, "Mn" is manganese, and "O4" indicates that the compound has four oxygen atoms.
CH3 - This chemical formula represents a compound called methane. "C" stands for carbon and "H3" indicates that the compound contains three hydrogen atoms.
NH4NO3 - This chemical formula represents a compound called ammonium nitrate. "N" stands for nitrogen, "H4" indicates that there are four hydrogen atoms, and "O3" indicates that the compound has three oxygen atoms.
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5. Sulfuryl chloride, SO2Cl2, is a highly reactive gaseous compound. When heated, it decomposes as follows: SOCI(g) = SO2(g) + Cl2(g). This decomposition is endothermic. A sample of 3.509 grams of SO2Cl2 is placed in an evacuated 1.00-liter bulb and the temperature is raised to 375 K. a) What would be the pressure in atmospheres in the bulb if no dissociation of the SO2Cl2(g) occurred? b) When the system has come to equilibrium at 375 K, the total pressure in the bulb is found to be 1.43 atmospheres. Calculate the partial pressures of SO2, Cl2, and SO-Cl, at equilibrium at 375 K. c) Give the expression for the equilibrium constant (either K, or K) for the decomposition of SO_C12(g) at 375 K. Calculate the value of the equilibrium constant you have given. d) If the temperature were raised to 500 K, what effect would this have on the equilibrium constant? Explain briefly.
The value of the Decomposition equilibrium is 2-1 =1.
pV=nRT. n=m/Mr = 3.509 / 135 = 0.026 moles.
a) p=nRT/V=0.026 x 0.082 x 375/1 = 0.8 atm.
b) SO2Cl2 (g) ⇌ SO2 (g) + Cl2 (g).
1.43 - 0.8 = 63
2-1 =1.
0.63 x 0.026 = 0,01638. 0.026 -0,01638= 0.00962 moles of SO2CL2.
0.01638 moles of SO2 and 0.01638 moles of Cl2.
0.01638 + 0.01638 + 0.00962 = 0.04238 moles general.
1.43 x 0.01638 / 0.04238 = 0.5526 atm of SO2 and Cl2.
1.43 x 0.00962 / 0.04238 = 0.3246 atm of SO2CL2.
c) 0.01638 x 0.01638/ 0.00962=0,0278902703
d) Will react turn to the right
Decomposition is endothermic:- Yes all decomposition reactions are endothermic. Decomposition reactions involve the breaking of bonds that require energy. Due to this decomposition reactions are generally endothermic in nature.
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(a) The pressure in the atmosphere would be = 0.800 atm.
(b) Partial pressure of [tex]P_{SO_{2}Cl_{2} } =0.170 atm[/tex]
Partial pressure of [tex]P_{SO_{2}}=0.630atm[/tex]
Partial pressure of [tex]P_{Cl_{2}=0.630 atm[/tex]
(c) Equilibrium constant at 375 K is 2.33 atm.
(d) If the temperature were raised to 500K, the value of the equilibrium constant will increase.
(a) Mass of [tex]SO_{2}Cl_{2}[/tex] = 3.509 g
Molar mass of [tex]SO_{2}Cl_{2}[/tex] = 135.0 g/mol
Thus, moles of [tex]SO_{2}Cl_{2}[/tex] are-
Mole of [tex]SO_{2}Cl_{2}[/tex][tex]=\frac{3.500g}{135.0g/mol}[/tex] [tex]=0.026moles[/tex]
The initial pressure of the [tex]SO_{2}Cl_{2}[/tex] is calculated using the Ideal gas law-
[tex]P_{SO_{2}Cl_{2} } =\frac{nRT}{V} =\frac{(0.026moles)(0.082Latm/molK)(375K)}{1.00L}[/tex]
[tex]P_{SO_{2}Cl_{2} } = 0.800atm[/tex]
Thus, the Initial pressure of [tex]SO_{2}Cl_{2}[/tex]= 0.800 atm.
(b) Now,
[tex]P_{Total} =1.43atm[/tex]
At equilibrium,
[tex]P_{Total} =P_{SO_{2}Cl_{2} } +P_{SO_{2} } +P_{Cl_{2} }[/tex]
Thus, using the data from ICE table, solve for x-
1.43 = (0.800 - x) + x + x(1.43) = 1.43 - 0.800 = 0.630 atm
Hence, at equilibrium at 375 K, the partial pressure of each species present is-
[tex]P_{SO_{2}Cl_{2} } = 0.800-0.630 =0.170atm[/tex]
[tex]P_{{SO_{2} } } = x=0.630atm[/tex]
[tex]P_{{Cl_{2} } } = x=0.630atm[/tex]
(c) The expression of the equilibrium constant in terms of pressure for the decomposition of [tex]SO_{2}Cl_{2}[/tex] is written as-
[tex]K_{P} =\frac{P_{SO_{2} .}P_{Cl_{2} } }{P_{SO_{2}Cl_{2} } }[/tex]
Using the partial pressure values at 375 K , solve for [tex]K_{P}[/tex]-
[tex]K_{P} = \frac{(0.630atm)(0.630atm)}{0.170atm} =2.33atm[/tex]
Hence, the equilibrium constant at 375 K is 2.33 atm.
(d) As the decomposition of [tex]SO_{2}Cl_{2}[/tex] is endothermic, thus on increasing the temperature, more heat is added, so the reaction will go in a forward direction producing more products.
Thus, [tex]K_{500}[/tex] > [tex]K_{375}[/tex]
Hence, if the temperature were raised to 500K, the value of the equilibrium constant will increase.
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High-purity benzoic acid (C6H₂COOH; AHxn for combustion = -3227 kJ/mol) is used as a standard
for calibrating bomb calorimeters. A 1.221-g sample burns in a calorimeter (heat capacity = 1365 J/°C)
that contains exactly 1.240 kg of water. What temperature change is observed?
°℃
According to the given statement 5 °C temperature change is observed.
How does a calorimeter function and what is it?The variation in heat is measured by a calorimeter. A metal water container placed above an exhaust gases serves as the basic component of a calorimeter. The amount of water's temperature change is measured using a thermometer.
Briefing:The calorimeter burns a 1.221g sample.
The calorimeter contains 1.240 kg of water .
The calorimeter has a heat capacity of 1365 j/°C.
∆H rxn = -3227 kj/mol of benzoic acid
Given: 1.221 g is the mass of the benzoic acid
Benzoic acid's molecular weight is 122.12 g/mol.
122.12 g benzoic acid = 1 mol
1.221 g benzoic acid =1.221/122.12= 0.0099 moles
When burned, 1 mol of benzoic acid releases 3227 kj of energy.
Burning 0.0099 moles of benzoic acid produces energy
= 3227kj×(0.0099mols)/1 mol =32.2647 kj =32264.7 j
The calorimeter absorbed thermal energy
= 1365 j/C ×T
Water absorbs heat
= m× C× T
= 1240 g( 4.18 j/gC ) ×T
= 5183.2j/C×T
the total amount of heat absorbed
= 1365T + 5183.2T
=6548.2T
6548.2T=32264.7
T= 4.92 deg.C
T= 5 °C
The result is a 5 °C temperature change.
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Calculate the number of moles of carbon dioxide gas if the volume is 2.0 L, the pressure is 2.0 atm, and the temperatue is 410 K.
Use three significant figures in your answer.
mol
Taking into account the ideal gas law, the number of moles of carbon dioxide is 0.119 moles.
Ideal gas lawAn ideal gas or theoretical gas is a set of separate gaseous molecules separated from each other in such a way that no intermolecular forces are exerted between them.
The ideal gas condition normally occurs at low pressures and high temperatures, which allows each particle to be far from each other so that they do not interact.
The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:
P×V = n×R×T
Where:
P is the gas pressure.V is the volume that occupies.T is its temperature.R is the ideal gas constant. The universal constant of ideal gases R has the same value for all gaseous substances. The numerical value of R will depend on the units in which the other properties are worked.n is the number of moles of the gas. Number of moles of carbon dioxideIn this case, you know:
P= 2 atmV= 2 LT= 410 KR= 0.082 (atmL)÷(molK)n= ?Replacing in the ideal gas law:
2 atm× 2 L= n×0.082 (atmL)÷(molK)× 410 K
Solving:
[2 atm× 2 L]÷ [0.082 (atmL)÷(molK)× 410 K]= n
0.119 moles= n
Finally, the number of moles is 0.119 moles.
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Identify the options below that are results of decreasing the temperature of a system that includes an exothermic reaction in the forward direction. A. The concentration of the reactants increases. B. The concentration of the products increases. C. The equilibrium constant decreases. D. The equilibrium shifts toward the products.
If the reaction is exothermic as described, a rise in temperature will thus trigger the opposite reaction, which will result in a decrease in the amount of the products and an increase in the number of reactants. The reverse outcome will occur if the temperature is lowered.
B. The concentration of the products increases.
A reaction is defined as exothermic if the overall standard enthalpy change (H) is negative. Exothermic processes typically produce heat. Exergonic reaction, which the IUPAC defines as "... a reaction for which the overall standard Gibbs energy change G is negative," is frequently mistaken with the phrase.
Because "H" contributes significantly to "G," a strongly exothermic process is typically also exergonic. Exothermic and exergonic chemical reactions make up the majority of the impressive demonstrations in schools.
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please name and briefly describe 2 remedies a seller has under the ucc when the buyer has breached and the seller still possesses the goods.
2 remedies a seller has under the UCC when the buyer has breached and the seller still possesses the goods are that he can cancel the contract or withhold the delivery.
By contract, what did you mean?
An agreement between parties that establishes legal duties for both parties is known as a contract. Mutual consent, demonstrated by a valid offer and acceptance, sufficient consideration, capability, and legality are the fundamental components needed for the agreement to be a legally enforceable contract.
Contract with example: What is it?
A commitment made by one party to another that they will or won't take a particular action in the future. As an illustration, I'll offer you $3,500 to buy your car. An acceptance.
Therefore, it usually reflects the conditions of the offer—an indication, through speech or action, that both parties accept the terms of the contract.
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Voltaic cells are able to provide energy in the form of electricity because the potentials of their redox reactions permit electrons to flow
spontaneously.
true or false
Answer: True. Voltaic cells, also known as galvanic cells, are able to provide energy in the form of electricity because the potentials of their redox reactions permit electrons to flow spontaneously. Redox reactions involve the transfer of electrons from one species to another, and the flow of electrons through a circuit can be used to do work, such as powering an electric motor or a lightbulb. The potential difference between the two half-cells in a voltaic cell is called the cell potential, and it determines the direction and magnitude of the flow of electrons.
Explanation:
One of the most widely used isotopes in medical diagnostics is technetium-99m (the m indicates that it is a metastable isotope). Write the symbol for this isotope, indicating both mass number and atomic number. Express your answer as an isotope.
Atomic number of Technetium is 43, Mass number is 99 and symbol is Tc ,hence symbol of isotope is 99 m43 Tc
General representation of atom is AZ X
Where , A is mass number , Z is atomic number and X is symbol of element. Atomic number of Technetium is 43, Mass number is 99 and symbol is Tc ,hence symbol of isotope is 99 m43 Tc ,Where m stands for meta stable.
A chemical element with the atomic number 43 and the symbol Tc is known as technetium. It is the lightest element whose radioactive isotopes are all present. Technetium is a synthetic element that is created in abundance. The most prevalent source of naturally occurring technetium is uranium and thorium ores, where it spontaneously fissions as a byproduct, while molybdenum ores produce it as a byproduct of neutron capture. This crystalline, silvery-gray transition metal in group 7 of the periodic table is sandwiched between rhenium and manganese, and its chemical characteristics fall somewhere in the middle of the two nearby elements. Only in traces, 99Tc is the most prevalent naturally occurring isotope.
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Check the answer that applies; there may be more than one answer
Answer:
COMBINATION - - - ✓ -
DECOMPOSITION - - ✓ - -
SINGLE REPLACEMENT ✓ - - - -
DOUBLE REPLACEMENT - - - - ✓
COMBUSTION - ✓ - ✓ -
NEUTRALIZATION - - - - ✓
. What happens when metals react with water?
Answer:
Metals react with water to form oxides or hydroxides and release Hydrogen gas
Explanation:
draw the structure of a compound with the empirical formula c5h8o that gives a positive iodoform test and does not decolorize permanganate.
A ring of C3H5 makes up the structure of a chemical with the empirical formula C5H8O that passes the iodoform test and does not discolor permanganate.
C5H8O → 1/2 (C5H12-C5H8) = 1/2(4)=2 carbons CH3C=O
No C=C after a negative permanganate test
Has a C=O bond
Methyl ketone as it tested positive for iodoform
C3H5 = ring
A cyclopropyl group is a chemical structure produced from cyclopropane that may take part in cycloadditions and rearrangements of cyclopropane in organic processes. The group contains a chemical link from each of the three carbons to both of the other two, and its empirical formula is C3H5.
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nitrogen and hydrogen react to form ammonia, like this: (g) (g) (g) also, a chemist finds that at a certain temperature the equilibrium mixture of nitrogen, hydrogen, and ammonia has the following composition:
How 3 L of ammonia is produced is discussed in detail.With the formula NH3, ammonia is a nitrogen and hydrogen inorganic chemical.
Ammonia, the simplest pnictogen hydride and a stable binary hydride, is a colorless gas with a strong, pungent odor.
N2 (g) + 3H2 (g) ——> 2NH3 (g)
2(1.5) L = 3 L
2(1.5) L = 3 L
The stoichiometric coefficients predict that 1 mol of nitrogen will combine with 3 mol of hydrogen to create 2 mol of ammonia.
As a result, if the ratio of nitrogen to hydrogen is 1:3, (let's say x and 3x), then 2x of the product, i.e. ammonia, will be produced.
Here, x = 1.5, resulting in a 3 L ammonia formation.
Complete question:Nitrogen and hydrogen gases react to form ammonia gas as follows:N2 (g) + 3H2 (g) ——> 2NH3 (g)
At a certain temperature and pressure, 1.5L of N2 reacts with 4.5L of H2.
If all the N2 and H2 are consumed, what volume of NH3, at the same temperature and pressure, will be produced?
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What is an example of a change in the genetic traits of an organism due to human influence? OA. Humans breed dogs to be smaller and more friendly. B. Humans train dolphins to perform tricks for audiences at an aquarium. C. Humans destroy a tree frog's habitat, and the tree frogs become extinct. D. Humans feed bears, and the bears begin to enter campsites to look for food.
An example of human intervention in the genes is; humans breed dogs to be smaller and more friendly. Option A
What is the gene?We know that the gene is the unit of inheritance that can be found in the chromosome of the organism. The genes that the organism does have is what would tell must the observed traits of the organism and this is called the phenotype of the organism.
We know that human's do have an impact with the fact that the genes can spread in an organism. In many cases, we can see the alteration of the genes when we deal with the genetic make up of the pets.
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which of the following compounds contains the most polar bonds? atom (en): h (2.1); s (2.5); p (2.1); as (2.1); cl (3.0); si (1.8); sb (1.9)
The H2O bond is the most polar because the difference in electronegativity between H and O is at its highest.
Since each of the molecules in the set contains hydrogen and another element, the bond that fluorine makes with the hydrogen molecule will be the most polar of the group since fluorine is the most electronegative element in the periodic table. Check each bond's atoms' electronegativity properties. The most polar link will match the difference in electronegativity that is highest. The response is (b) N–H. The short answer is that because nitrogen is one of the most electronegative elements in the periodic table, its bond with hydrogen will be the most polar of all those mentioned.
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Which if these options best describes the diagnostic cleavage that is typical of the mica group of minerals (which includes muscovite and bietet A) Three perpendicular cleavage planes B) Two cleavage planes intersecting at 90° C) Two cleavage planes intersecting at 120 D) A single planar cleavage
D ) The answer that best depicts the diagnostic cleavage that is typical of the mica group of minerals which include muscovite and bietet is a single, planar cleavage .
Cleavage is the splitting of minerals along natural planes of weakness
When there is only one cleavage plane, a single, planar cleavage known as the basal or pinacoidal cleavage takes place. cleaved at the base of the graphite. Mica (like muscovite or biotite) has basal cleavage, that's why mica can be peeled into thin sheets.
So single planar cleavage is answer of this question.
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the equilibrium constant of a redox reaction can be calculated from the standard reduction potentials of involved redox couples at given temperature.
The Nernst equation and the link between the standard cell potential and free energy can be used to determine the equilibrium constant of the redox process in an electrochemical cell.
The ratio of the product concentration to the reactant concentration is the equilibrium constant. a fixed value for a certain reaction at a specific temperature. The letter "c" denotes the expression of the equilibrium constant in terms of concentrations.
The standard cell potential, temperature, reaction quotient, and the cell potential of an electrochemical cell are all related by the Nernst equation. The Nernst equation can be used to determine the cell potentials of electrochemical cells even under unusual circumstances.
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Which one of the following types of radiation has the shortest wavelength, the greatest energy, and the highest frequency? a. Ultraviolet radiation. b. Infrared radiation. c. Visible red light. d. Visible blue light.
Among the given radiations, the one with shortest wavelength, highest energy and highest frequency is ultraviolet radiation.
What is electromagnetic spectrum?Electromagnetic spectrum is the arrangement of different radiations in the order of decreasing wavelength or increasing frequency. The wavelength of an electromagnetic wave is inversely proportional to the frequency and energy.
Thus, as the frequency increases energy of the wave increases and wavelength decreases. The order of waves in the decreasing order of wavelength is, radio waves, microwaves, infrared, visible, ultraviolet, x-ray and gamma ray.
Thus, among the given radiation, the highest energy, highest frequency and shortest wavelength is ultraviolet radiation.
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Which of the following is an observation of a chemical property?
Ozinc reacts with hydrochloric acid
O
O water boils at 100°C.
Osand paper is roughly textured
density of wood is 0.51 g/cm³
Zinc reacts with hydrochloric acid is the correct observation of a chemical property and the right response to the question above.
Equation:
Zn +2HCL → ZnCl2 +H2
Balanced equation:
Zn +2HCL → ZnCl2 +H2
Atomic number 30 and the letter Zn identify zinc as a chemical element. When the oxidation is eliminated, zinc becomes shiny-greyish and becomes a somewhat brittle metal at normal temperature.
Zinc is a crucial trace element for all living things, including humans, animals, plants, and microbes. After iron, it is the trace metal found in humans in the second-highest concentration. As a crucial cofactor for several enzymes, zinc is also a crucial vitamin for development. Many disorders can be caused by a zinc shortage. slowing in growth, infection susceptibility, and diarrhea are among effects of deficiency in children. . Consuming too much zinc can result in copper shortage, ataxia, and sluggishness.
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Which statement is true? (2 points)
Group of answer choices
Geothermal power plants use the renewable resource of heat from within the Earth to generate electricity.
Solar energy is a non–renewable resource that is used by many countries all over the world.
Oil is a non–renewable resource that is hardly ever used, so there is not a concern of depleting the Earth's supply.
Hydroelectric energy uses the energy from the sun, which is a renewable resource.
Geothermal power plants use the renewable resource of heat from within the Earth to generate electricity is true .
Define geothermal energy.
Deep in the Earth's core, heat is produced that is known as geothermal energy. A clean, sustainable energy source that can be used to generate heat and electricity is geothermal energy.
Rocks, water, gas, and other geological materials are constantly being warmed by heat radiating from the core. Nearby rocks and aquifers underground are heated by magma. Geysers, hot springs, steam vents, submerged hydrothermal vents, and mud pots can all emit hot water. These are all geothermal energy sources.
They can either be directly heated by capturing their heat or by using the steam they produce to produce power. Buildings, parking lots, and sidewalks may all be heated with geothermal energy.
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Before the Contraction CycleThe contraction cycle is the repeating sequence of events that causes the process of the sliding filament mechanism, and it is made up of FOUR phases- The SR releases calcium ions (Ca2+) into the sarcoplasm- There, they bind to troponin. Troponin then moves tropomyosin away from the myosin-binding sites on actin
True. Calcium ions (Ca2+), which are released by the SR, bind to troponin in the sarcoplasm. Then, troponin displaces tropomyosin from the actin myosin-binding sites.
Troponin levels that are extremely high indicate the onset of a heart attack. Within six hours after a heart attack, the majority of individuals experience elevated troponin levels. Mostly everyone who has experienced a cardiac arrest will still have elevated levels after 12 hours. After a heart attack, troponin levels may continue to rise for 1 to 2 weeks. For instance, the typical levels for troponin I is 0 to 0.04 ng/mL, whereas the normal range for rising cardiac troponin (hs-cTn) is less than 14 ng/L. Increases in troponin levels may result from other kinds of heart damage. One of these is sinus arrhythmia.
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Can anyone answer this please. All of part 2.
please see picture
Thank you
Answer:
See below for detailed answers to each part of the question.
Explanation:
To solve this problem, we must consider Le Chatelier's Principle, which states the equilibrium position of a system will shift to counteract any changes that occur in the system. This principle can be used to answer each part of your question.
In Part i, we know that N2 is a reactant. Decreasing the concentration of N2 would cause this reaction to shift towards the reactants (to the left), effectively producing more N2 to counteract the change. This would simultaneously decrease the concentration of NH3, since this is a product of the reaction.
Considering the next part, also using Le Chatelier's principle, increasing the pressure would encourage the reaction to shift to decrease the pressure. In order to decrease the pressure, the equilibrium should shift to the side with fewer gas molecules. In this case, there are 4 gas molecules in the reactants and 2 in the products, so the equilibrium position shifts to the products (to the right) to decrease the pressure. This would also increase the amount of NH3, since NH3 is a product.
In Part iii, the temperature is increased. To counteract this change, the reaction will shift to decrease the temperature. Since we know that this reaction is exothermic, the equilibrium will shift towards the reactants (left) to decrease the temperature. This would decrease the amount of NH3.
Finally, in Part IV, if a catalyst is added, this will not change the equilibrium position. Catalysts do not change the overall energy change of a reaction, only the activation energy, so no equilibrium shift will be observed. Thus, the amount of NH3 will not increase/decrease but will remain the same.
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Answer:
I’m struggling with these too! Any help is appreciated
Explanation:
a buffer solution: consists of a weak acid in aqueous solution. consists of a mixture of a weak acid and its conjugate base. changes readily in ph upon addition of acid or base. has a ph equal to the pka of the weak acid that's in solution. resists changes in ph upon addition of large amounts of acid or base.
A buffer solution is the consists of a mixture of a weak acid and its conjugate base. it resists changes in pH upon addition of small amounts of acid or base.
The correct option from the given option is , the A buffer solution is the consists of a mixture of a weak acid and its conjugate base. or the weak base and the conjugate acid. A buffer solution resist the the change in pH upon the addition of the small amount of the acid or base to them. the pH of buffer shows the little change when we add very small amount of the strong acid and the strong base.
The buffer solution has the ability to maintain the hydrogen ion concentration with only small amount of dilution with acid or base.
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Helen goes to the doctor and has a thyroid test done. She receives 20 grams of radioactive iodine. After 8 hours, 10 grams of the iodine have broken down. After 16 hours, there are 5 grams of iodine left.
What is the half-life of the radioactive iodine?
8 hours
8 hours is the half-life of the radioactive iodine. The entire body is exposed to radiation risks from gamma rays. They can swiftly get through defences that alpha and beta particles can stop.
Like skin and clothing. Because of their powerful penetrating power, gamma rays may require several inches of a heavy substance, like lead, or even several feet of concrete, to be stopped. During radioactive decay, an atom's nucleus may emit gamma rays. They can easily penetrate the human body and travel tens of yards or more through the air. It takes a radioactive heavy, dense material, such several inches of lead or concrete, to shield this particularly penetrating form of ionising radiation.
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Question 20 (1 point) ✓ Saved A short circuit can cause ________ because there is nothing in the circuit to limit the current and absorb the electrical energy. Heat builds up quickly in the wire and power supply. (Lesson 4.05) an explosion a release of harmful chemicals a fire All of the above
A short circuit can cause giant spark ,because there is nothing in the circuit to limit the current and absorb the electrical energy. Heat builds up quickly in the wire and power supply. (Lesson 4.05) an explosion a release of harmful chemicals a fire All of the above
What is Circuit?
The point where the electrons enter the electrical circuit is known as the source, and the point where they depart is known as the return. Let's do a little experiment; you'll require the following:
Electrical tape, wire, and electric bulbs
power source
Only when there is at least one closed loop running from the positive to the negative end of the circuit is it considered complete. This is the most basic type of electrical circuit. A television's internal circuit is more intricate and made up of several parts
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The atomic number of an is equivalent to the number of
An atom's protons and neutrons are measured by its atomic number.
What is atomic number?Atomic number is defined as a chemical element's number in the periodic system, which places the elements in ascending order of the number of protons in their nuclei. An element's identity is determined by its proton count.
The atomic number of an atom is how many protons it has (Z). It also has the same value as the atom's number of electrons. Total number of protons in an atom. There are exactly the same number of protons in each atom of a given element. The quantity of protons in an element is equivalent to its atomic number.
Thus, an atom's protons and neutrons are measured by its atomic number.
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the decomposition of h2o2 is represented by the equation above. the reactuin us thermodynamically favorable
The decomposition of H2O2 is represented by the equation above. the reaction us thermodynamically favorable 4H₂O₂ → 4H₂O + 2O₂
The following diagram illustrates how hydrogen peroxide decomposes chemically;
2H₂O₂ → 2H₂O + O₂
As a result, one oxygen molecule and two water molecules result from the breakdown of two hydrogen peroxide molecules.
Numerous chemical substances spontaneously react with molecular oxygen to produce peroxides in the form of free radicals.
Given that there are four hydrogen peroxide molecules breaking down in the diagram, we have;
4H₂O₂ → 4H₂O + 2O₂
The results of the breakdown of the four molecules of hydrogen peroxide are depicted in the accompanying diagram.
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if a map of chain complexes induces an isomorphism on homology, then the euler characteristics are equal. t/f
It is true that the euler characteristics are equivalent if a map of chemical chain complexes induces an isomorphism on homology. A mapping between two structures.
That preserves structure is known as an isomorphism. Of the same kind that an inverse mapping can reverse. If an isomorphism can be found between two mathematical structures, they are said to be isomorphic. Chemical processes take place everywhere around us, from the food our bodies metabolize to how the sunlight we receive is produced. It's crucial to understand physical and chemical changes before starting with chemical reactions. A material thing or system's structure is how its constituent parts are arranged and structured, or the organized object or system itself.
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what is the iupac name of the following compound 4 tert butyl 3 chlorophenol 4 tert butyl 5 chlorophenol
the IUPAC name of 4 tert butyl 3 chlorophenol will be given as
3-chloro-4-(1,1-dimethylethyl)phenol.
And the structure for the compound can be given as shown in figure.
IUPAC (International Union of Pure and Applied Chemistry), serves the international scientific endeavor in the dual function of a fundamental science and mission-oriented Union.
Naming according to IUPAC is based on naming a molecule's longest chain of carbons connected via single bonds forming alkane, whether in a continuous chain or in a ring.
All other deviations, either multiple bonds or atoms other than carbon and hydrogen, are indicated by prefixes or suffixes according to a specific set of priorities.
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Consider the half reactions one more time. Will the reaction as written here occur spontaneously?
Fe2+ (aq) +2 e-→ Fe(s) E° = -0.447 V
Cu2+ (aq) +2 e-→ Cu(s) E° = 0.342 V
Fe2+ (aq) + Cu(s) → Cu²+ (aq) + Fe(s)
yes or no or need more information
To solve such we need to have concept of spontaneity. The terms "feasible" and "likely" are both used to describe spontaneous processes. Therefore, second reaction will occur spontaneously.
What is spontaneity?The word "spontaneity" refers to a process's viability. A process is referred to as spontaneous if it can occur either on its own or as the result of some initiation under a certain set of circumstances. In other terms, a spontaneous process is one that may happen on its own, without any outside intervention.
For a reaction to be spontaneous, the value for ΔG should be negative and for that cell potential should be positive value according to following equation.
ΔG=-nFE
ΔG = Gibbs's free energy
E= cell potential
F= 96500
n= number of electron
Therefore, second reaction will occur spontaneously.
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Balance this equation, AlCl3 + NaOH -
Al(OH)3 + Nacl
The balanced chemical equation for the given chemical reaction is AlCl₃ + 3 NaOH [tex]\rightarrow[/tex]Al(OH)₃ +3 NaCl.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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