Benzene lacks a polar O-H bond, but ethanol does. Benzene C6H6 with ethanol C2H6O.
Benzene fails the iodoform test, whereas ethanol does.
While ethanol burns with a non-luminous flame, benzene produces a sooty flame.
Iodoform testing shows that ethanol passes whereas benzene does not.
In contrast to benzene, which generates a sooty flame, ethanol burns with a non-luminous flame.
Water does not mix with benzene, but organic solvents do.
It is a colorless liquid with a pleasant scent.
Benzene has a high melting point and a moderate boiling point.
It burns with a sooty flame and is quite flammable.
A clear, colorless liquid, ethanol has a distinct flavor of burning with a nice aroma. It has high flammability. Ethanol combines easily with water and a variety of organic liquids and is used to dissolve other chemical compounds.
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Conduction chocolate candy in your hand will eventually melt as the heat from your body is released and makes it melted.
Conduction causes the Thermal energy flows out of your hand into the chocolate bar and it starts off evolved to soften.
This approach that your (hand) is shifting strength to the chocolate bar inflicting it to revel in a segment extrade from stable to liquid. Conduction Chocolate sweet for your hand will finally soften as the warmth out of your frame is launched and makes it melted.
The melting factor of chocolate falls among 86°F and 90°F. This is substantially decrease than the common temperature of the human frame, that's 98.6°F so the warmth out of your hand increases the temperature of the chocolate and reasons it to soften.
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If the bond angle between two adjacent hybrid orbitals is 120°, which is the hybridization?
a. sp3d2
b. sp
c. sp3
d. sp2
Option (d). If the bond angle between two adjacent hybrid orbitals is 120 degree then this involves SP2 hybridization.
SP2 hybridization is the mixing of one s and two p atomic orbitals which involves the promotion of one electron in the s orbital to one of the 2p atomic orbitals. The combination of these atomic orbitals creates three new hybrid orbitals equal in energy-level. The hybrid orbitals are higher in energy than the s orbital but lower in energy than the p orbitals, but they are closer in energy to the p orbitals. The new set of formed hybrid orbitals creates trigonal structures creating a molecular geometry of 120 degrees. When the hybridization occurs the molecules have a linear arrangement of the atoms with a certain bond angle. A bond angle is the angle between any two bonds that include a common atom, usually measured in degrees.
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hexane burns according to the following equation: 2c6h14(g) 19o2(g) 12co2(g) 14h2o(g) what volume of co2 forms when 8.00 l of hexane burn, assuming the two volumes are measured under the same conditions? what volume of oxygen will be needed?
8.00L of hexane burns to produce 48.00L of CO2, if the two volumes are measured under identical circumstances. It takes 76.00L of oxygen.
Considering the response:Calculation:
C₆H₁₄ + 19/2O₂ → 6CO₂ + 7H₂O
where 6 moles of CO2 and 7 moles of H2O are produced when 1 mole of hexane combines with 19/2 moles of oxygen.
Volume is directly proportional to moles of gas according to Avogadro's law.6 moles of CO2 are created when 1 mole of hexane reacts with 8.00 liters, and their volume is as follows:
8.00L ₓ 6 = 48.0L
48.00L of CO₂ are formed.Again, 19/2 moles of oxygen are required for a full combustion of hexane. You need: Given that you have 8.0L of hexane.
8.00L × (19/2) =76.00L
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entropy never decreases in a spontaneous process. give an example to support this statement.
The perfect example for entropy of a spontaneous reaction would be the transfer of energy by heat from colder bodies to hotter bodies.
Spontaneous reactions are those chemical or biological reactions that usually take place without the influence of external factors. Non- Spontaneous reactions are those chemical reactions that generally requires an energy input to proceed or that cannot take place without the influence of external factors.
The transfer of energy by heat from colder bodies to hotter bodies is a spontaneous process in which the entropy of the system of bodies increases. The melting of an ice cube placed in a room causes an increase in the entropy of the room.
A spontaneous reaction may also involve an increase or decrease in enthalpy, it may involve an increase or decrease in entropy, but it will always involve a decrease in free energy that is a negative ΔG.
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how many equivalent resonance structures can you draw for sulfate where the formal charges a minimized (like in the previous question)?
There isn't a most favorable equivalent resonance of the Sulfate ion because they are all identical in charge and there is no change in Electronegativity between the Oxygen atoms.
What is atom?
An atom is a particle of count that uniquely defines a chemical element. Atoms include a critical nucleus surrounded with the aid of using one or greater negatively charged electrons. The nucleus is undoubtedly charged and carries one or greater quite heavy debris referred to as protons and neutrons.
Therefore, There isn't a most favorable equivalent resonance of the Sulfate ion because they are all identical in charge and there is no change in Electronegativity between the Oxygen atoms.
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When a nucleus of 235U undergoes fission, it breaks into two smaller, more tightly bound fragments. Calculate the binding energy per nucleon for 235U and for the fission product 137Cs .
The binding energy per nucleon for 235U and 137Cs is 7.6 MeV and 8.39 MeV.
The minimal amount of energy needed to take a particle out of a system of particles or to break a system of particles down into its component pieces is known as binding energy (BE).
Given nucleus = 235 U and nucleon = 137 Cs.
a) The expression to find BE of 235 U is written as 235U92.
Atomic number (Z) = 92 = number of protons
Mass number (A) = 235 (number of protons + neutrons)
Number of electrons = 235-92 = 143.
Mass of neutron (mₙ) = 1.00866 u
Mass of proton ([tex]m_H[/tex]) = 1.00783 u
The binding energy for the nucleus is calculated using the below formula,
[tex]B = (Zm_H + Nm_n- m_{atom})\times\mathrm{931.49\;MeV/u}[/tex]
For 235U,
[tex]\begin{aligned}BE&=[(92\times1.00783 u)+(143\times1.00866 u)-235](\mathrm{931.49\;MeV/u})\\&=\mathrm{1783.8\;MeV}\end{aligned}[/tex]
The BE per nucleon is given by,
[tex]\begin{aligned}\text{BE per nucleon}&=\frac{\text{total BE of nucleus}}{\text{number of nucleon}}\\&=\frac{1783.8}{235}\\&=\mathrm{7.6\;MeV}\end{aligned}[/tex]
b) The expression to find BE of 137Cs is written as 137Cs55.
Atomic number (Z) = 55 = number of protons
Mass number (A) = 137 (number of protons + neutrons)
Number of electrons = 137-55 = 82.
Mass of neutron (mₙ) = 1.00866 u
Mass of proton ([tex]m_H[/tex]) = 1.00783 u
The atomic mass of Cs = 137u
For 137Cs,
[tex]\begin{aligned}BE&=[(55\times1.00783 u)+(82\times1.00866 u)-137](\mathrm{931.49\;MeV/u})\\&=\mathrm{1149.3\;MeV}\end{aligned}[/tex]
The BE per nucleon is given by,
[tex]\begin{aligned}\text{BE per nucleon}&=\frac{\text{total BE of nucleus}}{\text{number of nucleon}}\\&=\frac{1149.3}{137}\\&=\mathrm{8.39\;MeV}\end{aligned}[/tex]
The answers are 7.6 MeV and 8.39 MeV.
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suppose 10.05 mol of ar gas are pumped into a 1.36 l container at 293.15 k. 1st attempt part 1 (1 point)see hint calculate the expected pressure based on the ideal gas law, pideal. atm part 2 (1 point) calculate an estimate of the gas pressure one might observe based on the van der waals equation, pobs. a
If a 1.36 l container is filled with 10.05 mol of ar gas at 293.15 k. Based on the VanderWaals equation and the ideal gas law, respectively, the anticipated pressure is 239.75 and 177.85
(a) The ideal gas law states that PV = NRT when V = 1.36l, T = 293.15K, N = 10.05mol, and R = 0.0821 are all taken into consideration. P = NRT/V = Pideal = 10.05 x 293.15 x 0.0821/ 1.36 = 177.85atm
(b)The vanderwaal equation states that Pobs = (NRT/V-b)- (a/V^2)
given b = 0.0322 L/mol when a = 1.34 L2 atm/mol2.
Pobs = (0.0821 x 293.15 / 1.36 x 1.36) - (1.34 x 1.36 x 1.36) = 240.47 - 0.72 = 239.75 atm
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When two liquids are mixed in a test tube, a precipitate forms and the test tube feels cold to the touch. How can you describe the reaction based on these observations?.
When two liquids are mixed in a test tube, a precipitate forms and the test tube feels cold to the touch. This is an exothermic reaction.
What is an exothermic reaction ?Exothermic refers to chemical reactions that release energy. When bonds are created in the products of exothermic processes, more energy is produced than is required to break the bonds between the reactants. The temperature of the reaction mixture rises as a result of exothermic reactions.
The temperature of the reaction mixture rises as energy is released in an exothermic process. In an endothermic reaction, the temperature drops as energy is absorbed. A thermometer can be inserted into the reaction mixture to track temperature changes.
Thus, it is an exothermic reaction.
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Which conditions would activate the necessary enzymes for the citric acid cycle?a. high levels of ATP b. low levels of ADP c. high levels of ADP d. high levels of NADH
High levels of ATP would activate the necessary enzymes for the citric acid.
The TCA cycle metabolizes acetate that is derived from carbohydrates, proteins, and fats to form adenosine triphosphate (ATP), which is referred as the body's energy currency. Oxidation of one glucose molecule through the combined action of the TCA cycle, glycolysis, and oxidative phosphorylation yields an estimated number of 30–38 ATP molecules.
High levels of ATP activates citric acid cycle because citrate synthase is inhibited by the final product of the citric acid cycle as ATP, ADP (adenosine diphosphate) works as an allosteric activator of the enzyme as ATP is formed from ADP. Therefore, the rate of the citric acid cycle is reduced when the cell has a high level of ATP.
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calculate the cell potential for the following reaction that takes place in an electrochemical cell at 25°c.
The Nernst equation can be used to calculate the potential of an electrochemical cell when not under standard conditions. It is also very useful to show how ion concentration affects cell potential and the cell potential is 0.09314 V.
At 298 K, the Nernst equation simplifies to - 0.0592 v protocol Q where Q is the reaction quotient and n is the coefficient of electrons transferred if the redox equations are balanced.
In this cell copper is reduced at the cathode and oxidized.
0.00V. However, the anode C.When 2 +] = 0.0032 M.including cathode [C. When 2 +] = 4.48 M. , so the cell potential is not 0.00 V. The cell potential can be solved using the Nernst equation. where n = 2 and Q = 0.0032/ 4.48.= 0.0592.E= 0-0.0592/ 2 log (0.000174)E= 0-0.0592/ 2 -3.14E= 0-0.0592/ 2E = 0.09314 V.Read more about potential;
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what is the highest impact (and perhaps most controversial?) personal choice to reducing carbon emissions?
The best effect people can have in battling environmental change is to have one fewer child, according to another review that recognizes the best ways individuals can cut their carbon emissions.
Carbon emissions should tumble to two tons of CO2 for each individual by 2050 to keep away from serious global warming, yet in the US and Australia emissions are at present 16 tons for every individual and in the UK seven tons. "That is clearly a huge change and we needed to demonstrate that people have an opportunity to be a piece of that," said Kimberly Nicholas, at Lund University in Sweden and one of the exploration group.
The following best activities are selling your vehicle, keeping away from long flights, and eating a veggie lover diet. These diminish emissions ordinarily more than common green exercises, like reusing, utilizing low energy lights or drying washing on a line. Nonetheless, the high effect activities are seldom mentioned in government guidance and school course books, specialists found.
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the average kinetic kinetic energy of helium gas at 170.0 k is 2.12007 kj/mol. what is the average kinetic energy at 340.0 k?
At 340.0k the average Kinetic energy is 4.24014 kj/mol.
what is kinetic energy?An object's kinetic energy is the energy it has as a result of motion. Applying force is necessary if we want to accelerate an object. We have to put in work to apply a force. After the work is finished, the object will be moving at a new, constant speed because energy has been transferred to it.
At 170.0k the average kinetic kinetic energy of helium gas is 2.12007 kj/mol.
At 340.0k the average kinetic kinetic energy of helium gas = ?
At 340.0k the average K.E = 340 × 2.12007/ 170
At 340.0k the average K.E = 4.24014 kj/mol.
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a sample of neon gas collected at stp occupies a volume of 37.3 l. how many moles of gas does the sample contain?
2.17 moles of gas does the sample contain in a sample of neon gas collected at stp occupies a volume of 37.3 l.
What is noble gas?
Noble gases form a class of chemical elements with similar properties. Under standard conditions, they are all odorless, colorless, monatomic gases with little chemical reactivity. The six naturally occurring noble gases are helium, neon, argon, krypton, xenon, and radioactive radon.
Therefore, 2.17 moles of gas does the sample contain in a sample of neon gas collected at stp occupies a volume of 37.3 l. Noble gases form a class of chemical elements with similar properties. Under standard conditions, they are all odorless, colorless, monatomic gases with little chemical reactivity.
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What is the noble gas electron configuration for iodine
Answer:
See explanation and Image
Explanation:
Chemical element iodine has the atomic number 53 and the letter I in its symbol. of the stable halogens that weighs the most.
Symbol: I
Atomic mass: 126.90447 u
Atomic number: 53
Electron configuration: [Kr] 4d105s25p5
(Hope it helps)
what would happen to your calculated specific heat of the unknown metal if you had failed to completely dry the metal unknown between trials?
The specific heat would be less than the real number, while the total heat absorbed would be higher.
The amount of energy required to raise the temperature of one gram of a given substance by one degree Celsius is known as the specific heat capacity. All compounds have a unique value that can be used to identify an unknown compound when other methods of identification might not be as useful. One technique, for instance, that may be utilized (with the help of lander robots) to determine the composition of extraterrestrial worlds like Mars is the measurement of specific heat. Additionally, a material's potential industrial applications may be influenced by its specific heat. Materials with low specific heat are frequently employed in heat transmission applications like cooking pots and radiators, while materials with high specific heat can be utilized as insulators in freezers, ovens, etc.
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a pure substance which can only be seperated into two or more simpler substances using chemcial changes is called
A pure substance that can only be separated into two or more simpler substances using chemical changes is called a chemical compound.
A chemical compound is a type of pure substance that is made up of two or more different elements that are chemically bonded together. These elements are combined in a fixed ratio, and the resulting compound has different properties than the individual elements. For example, water (H2O) is a chemical compound made up of two hydrogen atoms and one oxygen atom. The atoms are bonded together by covalent bonds, and the resulting compound has the unique properties of being a liquid at room temperature and being essential for life.In order to separate a chemical compound into its constituent elements, a chemical reaction is required. This process involves breaking the chemical bonds between the atoms and forming new bonds between the atoms of the individual elements. This can be done through a variety of methods, such as electrolysis or heating the compound to high temperatures. The resulting elements will have the same physical and chemical properties as the original elements, but will no longer be bonded together as a compound.
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Three students were discussing their ideas about chemical bonds. This is what they said:
Janre: "I think a chemical bond is produced by a molecule. It is a substance made up of matter that holds atom together."
Will: "I think a chemical bond is an attraction between atoms. It is not made up of matter."
Leta: "I think a chemical bond is a structural part of an atom that connects to other atoms."
Which student do you agree with and why? Explain your thinking.
Answer:
I agree with Janre. A chemical bond is produced by a molecule, which is a substance made up of matter that holds atoms together. A chemical bond is the result of the attraction between atoms, which allows them to combine and form molecules. This attraction is not made up of matter itself, but it is a fundamental property of atoms that allows them to form bonds and create molecules. Therefore, Janre's explanation is the most accurate and complete.
Explanation:
Answer: In this case, I find myself in agreement with Janre. A molecule is a substance made up of matter that binds atoms together via a chemical bond. When atoms come together due to mutual attraction, a chemical bond is formed. This attraction is not material, but rather a feature of atoms that is essential to the formation of bonds and molecules. Janre's explanation is the most thorough and precise one available.
Explanation:
What type of reaction is a precipitation reaction?
a. synthesis reaction
b. decomposition reaction
c. single displacement reaction
d. double displacement reaction
A double displacement reaction is a precipitation reaction. In an aqueous solution, a double-displacement reaction takes place when the positive and negative ions of two ionic compounds exchange positions to create two completely different compounds. These substances may manifest as precipitates, gases, or molecular substances.
When dissolved substances react, one (or more) solid products are produced, which is known as a precipitation reaction. These kinds of reactions, which are also occasionally known as double displacement, double replacement, or metathesis reactions, frequently involve the exchange of ions between ionic compounds in aqueous solutions.
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a flask has a mass of 78.23 g when empty and 593.63 g when filled with water. when the same flask is filled with concentrated sulfuric acid, h2so4, its mass is 1026.57 g. what is the density of concentrated sulfuric acid in g/cm3? (assume water has a density of 1.00 g/cm3 at the temperature of the measurement.)
the density of concentrated sulfuric acid is 1.84 g/mL when a flask has a mass of 78.23 g when empty and 593.63 g when filled with water and later with sulfuric acid whose mass is 1026.57 g.
Given mass of flask mf = 78.23 g
Mass of flask when filled with water mfw = 593.63 g
Mass of water mw = mfw - mf = 593.63 - 78.23 = 515.4g
Volume of water Vw = Volume of acid Vc = 515.4mL
Mass of flask when filled with acid mfa = 1026.57 g
Mass of acid ma = mfa-mf = 1026.57 - 78.23 = 948.34g
Density = mass(ma)/volume of acid (Va)
= 948.34/515.4 = 1.84 g/mL
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dding a small amount of strong acid to a buffer solution will cause the ph to increase slightly. true false
True, The pH of a buffer solution will be affected by strong acid because strong acid dissociates completely to give H+ ions so the pH of buffer will be appreciably affectedand as the H+ concentration increased pH will decrease.
When a small volume of acid is added to a buffer solution, the pH of the system decreases as an effect of the increased hydronium ions in the solution. However, when a small volume of base is added to a buffer solution, the pH of the system increases as an effect of the increased hydroxide ions in the solution.When a base is added to a buffer solution, the pH does not change. The buffer solution prevents the base from neutralizing the acid.
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draw the structure of the carbocation intermediate that leads to the indicated products in this reaction.
carb is the structure of the carbocation intermediate that leads to the indicated products.
Carbocation: It is an organic molecule, an intermediate, that has a carbon atom bearing a positive charge and three bonds instead of four
The reaction given in the question is shown below.
carb1-----fig(1)
Given reaction
The reaction starts with the removal of the bromide ion to generate the carbocation. The carbocation is generated near the four-membered ring.
The methylene shift occurs to rearrange the carbocation by forming a five-membered ring.
carb2----fig(2)
Bromide ion removal
This carbocation accounts for the formation of the products given in the question. Two alkenes are formed by the elimination reaction and the ether is formed by the substitution reaction.
carb3----fig(3)
Elimination and substitution of products
Thus, the carbocation formed in the reaction is shown below.
carb1-------fig(4)
Fig (4) shows the final Structure of the carbocation intermediate.
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When a nucleus of ^235 U undergoes fission, it breaks into two smaller, more tightly bound fragments.
1) Calculate the binding energy per nucleon for ^235U? (Express with appropriate units)
2) Calculate the binding energy per nucleon for the fission product ^137 Cs?
The binding energy per nucleon is typically in the range of 8 to 10 MeV/nucleon for medium-weight nuclei such as ^235U. the binding energy per nucleon for the fission product ^137 Cs is approximately 1.085558768e-12 joules per nucleon.
To calculate the binding energy follow the steps. Determine the atomic masses of the individual protons and neutrons in the nucleus. You can find these values in a table of atomic masses. Count the number of protons and neutrons in the nucleus. For ^235U, there are 235 protons and 235-235=0 neutrons. Calculate the total mass of the protons and neutrons in the nucleus using their atomic masses and the number of each type of nucleon. Determine the total binding energy of the nucleus using the mass defect formula: Binding energy = (total mass of protons and neutrons) - (actual mass of nucleus) Calculate the binding energy per nucleon by dividing the total binding energy by the number of nucleons (protons + neutrons) in the nucleus.
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What are some of the main reasons calcium chloride can be beneficial Why can it be useful?
Because calcium chloride has a lower freezing point than sodium chloride, it is more efficient at melting the ice on roadways in the winter.
Because the calcium chloride solution has a lower freezing point when combined with water than the sodium chloride solution, using calcium chloride solution on roadways in the us is easier.
The van't hoff factor causes the calcium chloride solution to have a lower freezing point.
Since calcium chloride has a lower freezing point than ice, when we apply it to the ice, it takes heat from the ice and melts it. There is no more efficient way to do the same objective than using sodium chloride solutions.
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The cell shown below could be a(n)
Answer:
the answer is bacteria cell
Which of the following molecules would have the strongest intermolecular forces?
F2
H₂O
CH3CI
C3H8
I2
Answer:
B .............................
in the alkaline-earth group, atoms with the smallest radiiselect one:a.are all gases.b.have the highest ionization energies.c.are the most reactive.d.have the largest volume.
The option (b) is correct - it have the highest ionization energies.
What is ionization energy?
In physics and chemistry, the amount of energy needed to remove an electron from a single atom or molecule is known as the ionisation energy or ionisation potential.
What is alkaline earth group ?
Because of the "alkaline" solutions, hydroxides, that they produce when they interact with water, these metals are known as "alkaline" earth metals. The oxides of alkaline earth metals were known to alchemists as "earth."
The alkaline earth group atoms are found in group 2A of the periodic table. The smaller they are (further up the group), the closer the valence electrons are to the nucleus. Since the nucleus is positively charged and electrons are negatively charged, there is electrostatic attraction between them.
Electrostatic attraction increases in strength the closer together the oppositely charged particles are. As a result, there is greater electrostatic attraction present in the smaller alkaline earth group atoms. This makes it more difficult to remove the valence electrons, which corresponds to higher ionization energies.
Therefore, the option (b) is correct - it have the highest ionization energies.
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Is the one piece real?
Answer:
Yes
Explanation:
The one piece, the one piece is real.
how many protons z and how many neutrons n are there in a nucleus of the most common isotope of rubidium
Answer: 37 protons 48 neutrons
Explanation:
If 19.9% of Boron is Boron-10 and 80.1% is Boron-11, what is the average atomic mass?
Answer:
10.801=11
Explanation:
avarage atomic mass =relative abundance of first isotope*mass number of first isotope/100+relative abundance of second isotope*mass number of second isotope/100
how does the internal energy of the ice and water mixture change if the temperature does not rise while the ice is melting?
Thermal energy is transferred to ice causing this to occur. Since the temperature doesn't change, all the thermal energy is used to increase the potential energy.
What is potential energy?
As we know, an item can shop power because of its function. In the case of a bow and an arrow, when the bow is drawn, it stores some amount of electricity, which is chargeable for the kinetic energy it gains when released.Similarly, within the case of a spring, while it is displaced from its equilibrium position, it profits a few amount of power which we have a look at inside the shape of pressure we sense in our hands upon stretching it. We are able to outline capacity power as a shape of power that outcomes from the alteration of its position or kingdom.To know more about potential energy, click the link given below:
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