Why the following happens: A bimetallic rod when heated, undergoes the change of shape. A. Because the two metals that are part of the rod have equal coefficients of linear expansion. B.Because the two metals that are part of the rod have different coefficients of linear expansion, and the one with the smallest curve has the highest value C. Because the two metals that are part of the rod have different coefficients of linear expansion, and curve to the least value D. Because the two metals that are part of the rod have similar coefficients of linear expansion.

The molecule formed when product E of the Butlerov reaction undergoes ring closure is called cyclohexanone.

The Butlerov reaction is a chemical reaction involving the condensation of an aldehyde or ketone with a cyanide compound, followed by hydrolysis to form a carboxylic acid.

In the reaction, a carbon-carbon double bond is formed between the carbonyl carbon of the aldehyde or ketone and the carbon of the cyanide compound.

Product E of the Butlerov reaction can undergo ring closure through intramolecular reactions. In this case, the ring closure results in the formation of a cyclic ketone known as cyclohexanone. Cyclohexanone has a six-membered ring structure with a carbonyl group (C=O) attached to one of the carbon atoms in the ring.

Cyclohexanone is a widely used chemical compound in various industrial processes, including the production of nylon, rubber, and plastics. It serves as a precursor for the synthesis of many important chemicals and pharmaceuticals.

Therefore, when product E of the Butlerov reaction undergoes ring closure, the molecule formed is cyclohexanone.

Learn more about Cyclohexanone from the given link:

https://brainly.com/question/32929499

#SPJ11

The rate of consumption of Ca is 0.0833 g/s.

The rate of consumption of Ca can be determined by dividing the mass of Ca consumed (2.50 g) by the time taken for the reaction to occur (30.0 seconds). This gives us a rate of 0.0833 g/s, indicating that 0.0833 grams of Ca are consumed every second during the reaction at the given temperature.

In chemical reactions, the rate of consumption or production of a substance is typically expressed in terms of the change in concentration over time. In this case, since the mass of Ca consumed is given, we can directly calculate the rate of consumption.

It's important to note that the rate of consumption of Ca may vary with temperature and other reaction conditions. The given rate applies specifically to the given temperature and the specific reaction conditions mentioned in the problem.

for such more questions on  rate

https://brainly.com/question/24749252

#SPJ8

Lithium (Li) is expected to be paramagnetic because it has unpaired electrons.

The atomic number of lithium is 3, indicating that it has three electrons. The electronic configuration of a lithium atom can be represented as 1s² 2s¹, where 1s² represents the filled 1s orbital with two electrons, and 2s¹ represents the single electron in the 2s orbital.

To determine whether an atom or ion is paramagnetic or diamagnetic, we look at the presence of unpaired electrons. Paramagnetic substances have unpaired electrons, while diamagnetic substances have all electrons paired.

In the case of lithium, the 1s² electrons are paired, but the 2s orbital contains a single unpaired electron. This unpaired electron allows lithium to exhibit paramagnetic properties.

In summary, lithium is paramagnetic because it possesses one unpaired electron in its 2s orbital.

Learn more about Paramagnetic substances https://brainly.com/question/20350848

#SPJ11

"Hypotonic solution," refers to a solution with the highest water concentration due to its lower solute concentration compared to the other options, leading to water influx into cells.

A hypotonic solution would be most likely to have the highest water concentration. In a hypotonic solution, the solute concentration is lower than that inside the cell or compared to another solution. As a result, water tends to move into the cell or the solution to equalize the concentration.

When a cell is placed in a hypotonic solution, water molecules will move into the cell through the process of osmosis. This influx of water increases the water concentration inside the cell, leading to cell swelling or even bursting in extreme cases.

Compared to hypertonic and isotonic solutions, a hypotonic solution has a lower solute concentration, allowing for a higher concentration of water molecules. This results in a higher water concentration in the solution. It's important to note that the concept of tonicity is related to the relative solute concentrations between two solutions and their effect on cell osmosis. In this case, a hypotonic solution is characterized by a higher water concentration compared to the other options.

learn more about Hypotonic solution here:

https://brainly.com/question/28020628

#SPJ11

The volume of 3.01×10^23 molecules of O2 gas at STP is approximately 11,200 cm^3. This is calculated using the ideal gas law equation and converting from liters to cm^3.

At standard temperature and pressure (STP), the volume of 3.01×10^23 molecules of O2 gas can be calculated using the ideal gas law equation: PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

At STP:

- Pressure (P) = 1 atmosphere (atm)

- Temperature (T) = 273.15 Kelvin (K)

- Ideal gas constant (R) = 0.0821 liter·atm/(mol·K)

To find the volume (V) in cm^3, we need to convert it from liters. There are 1000 cm^3 in 1 liter.

First, calculate the number of moles (n):

n = (3.01×10^23 molecules) / (Avogadro's number)

Using Avogadro's number (6.022×10^23 mol^-1):

n = (3.01×10^23 molecules) / (6.022×10^23 mol^-1)

n ≈ 0.5 moles

Now we can calculate the volume (V):

V = (nRT) / P

V = (0.5 mol) * (0.0821 liter·atm/(mol·K)) * (273.15 K) / (1 atm)

V ≈ 11.2 liters

Converting liters to cm^3:

V_cm^3 = V * 1000

V_cm^3 = 11.2 * 1000

V_cm^3 = 11,200 cm^3

Therefore, the volume of 3.01×10^23 molecules of O2 gas at STP is approximately 11,200 cm^3.

learn more about ideal gas law here:

https://brainly.com/question/30458409

#SPJ11

To find the number of moles in one cubic meter of an ideal gas at 20.0 °C and atmospheric pressure, we can use the ideal gas law. We can then calculate the mass of one cubic meter of air using Avogadro's number and the molar mass of air. Finally, we compare this result with the tabulated density of air at 20.0 °C.

(a) Using the ideal gas law equation PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin, we can rearrange the equation to solve for n.
Given that the volume is 1 cubic meter and the temperature is 20.0 °C, which is equivalent to 293.15 K, and assuming atmospheric pressure, we can substitute these values into the equation to find the number of moles in one cubic meter of gas.

(b) To calculate the mass of one cubic meter of air, we need to know the molar mass of air. Given that Avogadro's number of molecules of air has a mass of 28.9 g, we can divide this mass by the molar mass to find the mass of one molecule.
Multiplying this mass by Avogadro's number gives us the mass of one mole of air. Finally, multiplying the molar mass by the number of moles per cubic meter (obtained in part a) gives us the mass of one cubic meter of air.
(c) We can compare the calculated mass of one cubic meter of air with the tabulated density of air at 20.0 °C.
Density is defined as mass divided by volume, so we can calculate the density of air using the mass obtained in part b divided by the volume of one cubic meter. We can then compare this density with the tabulated value to assess the agreement between the calculated and tabulated values.
Learn more about Atmospheric pressure from the given link:
https://brainly.com/question/28310375
#SPJ11

Calcium salt of stearic acid is insoluble in water. Therefore, option (a) is the correct answer.

Solubility is the capability of a chemical to dissolve in a particular solvent. A substance's solubility is a characteristic property. This means that if you know the properties of a substance, you may anticipate how soluble it will be in a particular solvent. When a compound is insoluble, it indicates that it does not dissolve in a particular solvent and, in this case, the solvent is water.

Stearic acid is a saturated fatty acid that has 18 carbon atoms. It is commonly found in butter, cheese, and meat. Stearic acid is utilized to produce a variety of personal care and industrial goods. It is used in soap, candles, lubricants, and more. Stearic acid is also used as a stabilizer in PVC and in the manufacture of plasticizers. Calcium stearate is a salt of stearic acid that is insoluble in water.

Learn more about Stearic acid:

https://brainly.com/question/28303531

#SPJ11

The property of rubbing alcohol that is a chemical property is its acidity. The correct answer is option d.

Chemical properties describe the behavior or characteristics of a substance when it undergoes a chemical change or reaction. Acidity is a chemical property that refers to the ability of a substance to donate protons (H+) in a chemical reaction.

In the case of rubbing alcohol, the presence of any acidity would indicate the potential for it to react with other substances in an acidic manner. Acidity can influence the chemical reactivity and behavior of rubbing alcohol in various contexts, such as in reactions with other chemicals or in interactions with biological systems.

On the other hand, properties such as boiling point, density, and melting point are physical properties. They describe the substance's characteristics without undergoing a chemical change or reaction.

The correct answer is option d.

To know more about Chemical properties  refer to-

https://brainly.com/question/24632287

#SPJ11

Complete question

Which property of rubbing alcohol is a chemical property?

a. its boiling point (82.5°C)

b. its density (0.786 g/cm?)

c. its melting point (-89° C)

d. its acidity

The overall mass transfer coefficient (Kₐ) is 285 g O₂/m³h.

To determine the overall mass transfer coefficient (Kₐ), we can use the equation:

Kₐ = (OTR * C∗) / (C₂ - C∗)

Where:

OTR is the oxygen transfer rate in g O₂/m³h,

C₂ is the initial saturation oxygen concentration in mg/L,

C∗ is the final saturation oxygen concentration in mg/L.

Step 1: Convert units

First, we need to convert the oxygen transfer rate (OTR) from g O₂/m³h to mg O₂/Lh to match the concentration units.

OTR = 95 g O₂/m³h * (1000 mg/g) / (1 m³/1000 L) = 95000 mg O₂/Lh

Step 2: Substitute values

Substitute the given values into the equation:

Kₐ = (95000 mg O₂/Lh * 7.5 mg/L) / (7.5 mg/L - 2.5 mg/L)

Step 3: Perform calculations

Calculate the difference in concentration:

C₂ - C∗ = 7.5 mg/L - 2.5 mg/L = 5 mg/L

Calculate the overall mass transfer coefficient:

Kₐ = (95000 mg O₂/Lh * 7.5 mg/L) / 5 mg/L

Step 4: Simplify

Simplify the expression:

Kₐ = 1425000 mg O₂ L / 5 L h

Step 5: Convert units

Convert the units back to the desired form, g O₂/m³h:

Kₐ = 1425000 mg O₂ L / 5 L h * (1 g/1000 mg) * (1 m³/1000 L) = 285 g O₂/m³h

Therefore, the overall mass transfer coefficient (Kₐ) is 285 g O₂/m³h.

Learn more about mass transfer coefficient from the given link: https://brainly.com/question/32021907

#SPJ11

The element that is shown in the diagram is fluorine.

The valence electrons, or outermost electrons involved in chemical bonding, are shown as dots or lines encircling the element's symbol in a Lewis dot structure. To show how many valence electrons an element has, dots are placed around its symbol.

The Lewis dot structure aids in determining the bond types (single, double, or triple bonds), the distribution of electrons, and the overall shape of the molecule. It is a helpful tool for comprehending chemical bonding and forecasting how molecules will behave in different chemical processes.

Learn more about dot structure:https://brainly.com/question/28652824

#SPJ1

The false statement on the specific enthalpy change h2 - h1 is the option B.

The false statement on the specific enthalpy change h2 - h1 is the option B.

For ideal gases, h2 - h1 cannot be calculated if only cp is known as it is dependent on other parameters too.

Enthalpy is a thermodynamic concept that refers to the sum of the internal energy and the product of the pressure and volume of a thermodynamic system.

The word "enthalpy" comes from the Greek word "enthalpos," which means "to heat something up."

The standard unit of measurement for enthalpy is joules (J) in the SI system of units and BTUs (British thermal units) in the US customary system of units.

The specific enthalpy change is the change in enthalpy between two states of matter.

h2 - h1 is the formula used to calculate the specific enthalpy change.

Specific enthalpy change is also referred to as the heat content of the system.

The equation for calculating the specific enthalpy change is given as below:

Specific enthalpy change, ΔH = H2 - H1

The change in enthalpy can be determined by subtracting the final enthalpy value from the initial enthalpy value.

The term "specific" is used to describe the amount of heat content in a given system per unit mass.

So the formula for calculating the specific enthalpy change is given as:

Δh = h2 - h1

The statement that is false on the specific enthalpy change h2 - h1 is as follows:

For ideal gases, h2 - h1 cannot be calculated if only cp is known as it is dependent on other parameters too.

Learn more about Enthalpy from the given link;

https://brainly.com/question/30431725

#SPJ11

The limiting reactant for the combustion reaction of acetylene is oxygen (O2).

In order to determine the limiting reactant, we compare the stoichiometric ratio of the reactants to the amount of each reactant available. From the balanced equation, we can see that the ratio of C2H2 to O2 is 2:5. Therefore, for complete combustion to occur, 2 moles of C2H2 require 5 moles of O2.

Given that the acetylene tank contains 37.0 mol of C2H2 and the oxygen tank contains 81.0 mol of O2, we can calculate the amount of O2 required to react with 37.0 mol of C2H2 by using the stoichiometric ratio:

(37.0 mol C2H2) × (5 mol O2 / 2 mol C2H2) = 92.5 mol O2

Since the available amount of O2 (81.0 mol) is less than the required amount (92.5 mol), oxygen is the limiting reactant. Therefore, the acetylene (C2H2) is in excess, meaning there will be some unreacted acetylene left after the reaction is complete.

The stoichiometric ratio of the reactants tells us the exact ratio in which they should react to form the products. In this case, the ratio of C2H2 to O2 is 2:5. By comparing the available amounts of each reactant to this ratio, we can determine which reactant will be completely consumed, thus limiting the reaction. In this scenario, we find that the available amount of O2 is insufficient to react with all of the C2H2. This means that after all the O2 is consumed, there will still be unreacted C2H2 left.

To confirm this, we calculate the amount of O2 required to react with the available C2H2 using the stoichiometric ratio. The calculated amount (92.5 mol) exceeds the amount of O2 available (81.0 mol), indicating that the reaction will not proceed to completion due to the limited amount of O2. Therefore, O2 is the limiting reactant, and the excess C2H2 will remain unreacted.

for such more questions on reactant

https://brainly.com/question/26283409

#SPJ8

The full ground state electron configuration of oxygen (O) is 1s_2 2s_2 2p_4.

The electron configuration of an atom describes how the electrons are distributed among the energy levels and orbitals. In the case of oxygen, it has eight electrons in total. The electron configuration notation follows a specific pattern, indicating the principal energy level (n) and the type of orbital (s, p, d, f) occupied by the electrons.

Starting with the first energy level (n = 1), oxygen has two electrons in the 1s orbital, which is represented as 1s_2. Moving to the second energy level (n = 2), oxygen has a total of six electrons. The 2s orbital contains two electrons (2s_2), and the remaining four electrons are distributed among the three 2p orbitals (2p_4).

The electron configuration of 1s_2 2s_2 2_4 reflects the arrangement of oxygen's electrons in its ground state, where it has filled the available orbitals up to its atomic number of 8.

Learn more about electron configurations from the given link:

https://brainly.com/question/29157546

#SPJ11

The isoelectric point (pI) of the tetrapeptide leu-tyr-gly-glu is estimated to be approximately 3.22. This is determined based on the pH range (2.2 to 4.24) where the net charge of the peptide is zero. At this pH, the peptide carries no net positive or negative charge, indicating its pI.

The pka values of corresponding ionizable groups are given.

The isoelectric point (pI) is the pH at which a molecule or peptide carries no net charge. To estimate the pI of the tetrapeptide leu-tyr-gly-glu, we need to consider the charges on its constituent amino acids at different pH values.

The table provides the relevant information: the pKa values of the ionizable groups in each amino acid (α-amino group and α-carboxyl group). It also shows the net charge of the peptide at different pH values.

By examining the table, we observe that the net charge of the peptide is zero between pH 2.2 and pH 4.24. This means that within this pH range, the positive and negative charges on the amino acids balance each other out, resulting in a neutral overall charge for the tetrapeptide.

We know, pl is the isoelectric point, where net charge of the peptide is zero. From the above table, it is seen that

the net charge of the peptide is zero between 2.2 to 4.24.

pl = 2.2+4.24/2

pl =3.22

To learn more about isoelectric point  here

https://brainly.com/question/5584697

#SPJ4

A "collision" occurs when two transmissions interfere with each other in a communication system.

Collisions commonly occur in shared medium networks, such as Ethernet networks, where multiple devices are connected to the same network segment and contend for transmitting data simultaneously.

In such networks, collisions can happen when two or more devices attempt to transmit data at the same time, resulting in a collision of the transmitted signals. When a collision occurs, the signals become corrupted and unintelligible, and the data needs to be retransmitted.

To handle collisions, network protocols like Carrier Sense Multiple Access with Collision Detection (CSMA/CD) are used. These protocols detect collisions and implement mechanisms to manage and resolve them, such as random backoff timers and retransmission strategies.

Efficient collision handling is crucial for maintaining data integrity and preventing network congestion in shared medium networks. Therefore, network protocols and technologies aim to minimize collisions and optimize data transmission to ensure reliable and efficient communication.

To know more about Collisions refer to-

https://brainly.com/question/13138178

#SPJ11

The correct option is b. achiral.

To determine whether a spatula would be chiral or achiral, we need to consider its symmetry and whether it possesses a non-superimposable mirror image.

A chiral object is one that does not have a plane of symmetry or an axis of rotation that allows it to be superimposed onto its mirror image. In other words, if an object is chiral, its mirror image cannot be perfectly aligned with the original object.

If we examine a typical spatula commonly used in kitchens, we can observe that it possesses a plane of symmetry. When folded in half along the long axis, the two halves align perfectly, indicating that a plane of symmetry exists. This means that the spatula would have a mirror image that is superimposable onto the original object.

Based on this analysis, we can conclude that a typical spatula would be achiral. It has a plane of symmetry and lacks the necessary characteristics to be classified as a chiral object.

In summary, the answer is b. achiral.

Learn more about achiral

https://brainly.com/question/5838915

#SPJ11

Yes, the number of different colors used on a form should be limited to three colors, exclusive of black (K), white (W), and gray (G).

When designing a form, it is generally recommended to keep the color scheme simple and limited. Using too many colors can create visual clutter and make the form harder to read and understand. By restricting the number of colors to three (excluding black, white, and gray), you can maintain a clean and cohesive design.

Black, white, and gray are considered neutral colors that are often used for text, backgrounds, or borders. By excluding them from the count of different colors, you ensure that you have three additional colors for highlighting important information, indicating sections, or adding visual interest.

This limited color palette helps create a visually balanced form that is both aesthetically pleasing and functional, making it easier for users to navigate and complete the form.

learn more about black here:

https://brainly.com/question/14820625

#SPJ4

Indirect characterization of Mathilde: "She would have given anything to be invited to the party" is the detail that is an example of indirect characterization of Mathilde.

Indirect characterization refers to the way a writer reveals the character's personality through thoughts, actions, and speech. It is sometimes achieved through a character's interactions with other characters or the environment. In the story, "The Necklace," Mathilde Loisel is depicted as an unhappy housewife who has always dreamed of a life of luxury and ease. She is charming, with a magnetic personality and a desire to be accepted into high society. She is also vain and materialistic, preferring to surround herself with beautiful things rather than living in modesty. Her vanity is evident when she borrows the necklace for the party, as she wants to impress her friends and make herself look more affluent. This decision demonstrates her materialistic tendencies as she is not content with her current social standing.

To know more about indirect characterization please refer to:

https://brainly.com/question/887965

#SPJ11

The statement "One of its characteristic properties is reactivity with metals or carbonate to generate gases" is True.

Characteristic properties are those that are unique to a substance and distinguish it from other substances. Specific heat, melting point, and conductivity are examples of characteristic properties. These qualities are what make a substance distinct, and they are used to identify it.

Reactivity with metals or carbonates is one of the characteristic properties of acids. When acids come into touch with metals or carbonates, they react to produce gases. When an acid and a metal react, they create hydrogen gas. When an acid reacts with a carbonate, it creates carbon dioxide gas.

Acid and metal reaction example: 2HCl(aq)+Mg(s)→ MgCl₂(aq)+H₂(g)

Acid and carbonate reaction example: 2HCl(aq)+CaCO₃(s)→ CaCl₂(aq)+CO₂(g)+H₂o(l)

Therefore, the statement "One of its characteristic properties is reactivity with metals or carbonate to generate gases" is true.

You can learn more about reactivity at: brainly.com/question/32791989

#SPJ11

The process of elimination of soluble metabolic wastes is called excretion.

Excretion plays a crucial role in maintaining homeostasis by removing harmful byproducts of metabolism. One of the key organs involved in excretion is the kidney, which filters the blood and produces urine to eliminate waste products such as urea, creatinine, and excess salts.

Other organs also contribute to excretion, including the lungs, which eliminate carbon dioxide, and the skin, which excretes small amounts of waste products through sweat. Together, these elimination processes help ensure the proper functioning and health of the body by removing waste materials that could otherwise accumulate and cause harm.

Learn more about excretion:

brainly.com/question/32274304

#SPJ4

Building block molecules for biosynthetic pathways are indeed obtained from both the cell's catabolic pathways and the environment, providing the necessary raw materials for the synthesis of complex biomolecules.

Building block molecules for biosynthetic pathways are derived from two sources: the cell's catabolic pathways and the environment.

Catabolic pathways involve the breakdown of complex molecules, such as carbohydrates, proteins, and lipids, into smaller components through processes like glycolysis, the citric acid cycle, and fatty acid oxidation. These breakdown reactions release energy and generate precursor molecules that can be used for biosynthesis.

Simultaneously, cells acquire building block molecules from the environment through nutrient uptake. Organisms obtain essential nutrients, such as amino acids, nucleotides, vitamins, and minerals, from their surroundings. These molecules serve as raw materials for the synthesis of complex biomolecules within the cell.

The combination of catabolic pathways and environmental nutrient uptake provides the necessary building blocks for the cell to perform biosynthetic processes, creating complex macromolecules like proteins, nucleic acids, carbohydrates, and lipids. These macromolecules play vital roles in cell structure, function, and regulation.

learn more about biosynthetic here:

https://brainly.com/question/32662200

#SPJ11

The work done by the air is 18,525 J if the air  that initially occupies 0.94 m³ at a gauge pressure of 75kPa is expanded isothermally to a pressure of 101.3kPa and then cooled at constant pressure until it reaches its initial volume.

Initial volume, V₁ = 0.94 m³

Gauge pressure, P₁ = 75 kPa

Pressure after expansion, P₂ = 101.3 kPa

As the process is isothermal, the temperature remains constant. Therefore, we can use the ideal gas law, P₁V₁ = nRT = P₂V₂ Where n, R, and T are constant and equal in both cases, as the process is isothermal. Hence,

P₁V₁ = P₂V₂⇒ V₂ = (P₁V₁) / P₂⇒ V₂ = (75 × 10³ × 0.94) / 101.3⇒ V₂ = 0.693 m³

Now, the gas is cooled at constant pressure until it reaches its initial volume. So, we can use the formula: W = PΔV Where ΔV is the change in volume. Here,

ΔV = V₁ - V₂ = 0.94 - 0.693 = 0.247 m³

Hence, W = PΔV = 75 × 10³ × 0.247⇒ W = 18,525 J

Therefore, the work done by the air is 18,525 J. Answer: 18,525 J

More on work done: https://brainly.com/question/15077653

#SPJ11

When two atoms of the same elements combine to form a molecule, the bond between them is known as a covalent bond.

A covalent bond is a chemical bond formed by the sharing of a pair of electrons between two atoms. Covalent bonds usually arise from the sharing of one or more pairs of electrons between two atoms of non-metals or between a non-metal and a metalloid (metalloids) in a way that achieves the atoms' electron configurations' maximum stability.

Covalent bonds form when two atoms share one or more pairs of valence electrons. Each of the two atoms holds one end of the shared electron pair, resulting in a stable electronic configuration similar to that of a noble gas.

Covalent bonds may be quite sturdy, ranging from weak bonds that split quickly to robust bonds that require substantial energy to break. In general, covalent bonds have strengths ranging from 50 to 200 kilocalories per mole (kcal/mol).

Learn more about covalent bond:

https://brainly.com/question/3447218

#SPJ11

The statement "they cannot be hydrolyzed" about triacylglycerols is NOT true.

Triacylglycerols can be hydrolyzed, in fact. Triacylglycerols are enzymatically broken down into glycerol and specific fatty acids through a process known as lipolysis. Lipases, which cleave the ester bonds between glycerol and fatty acids, aid in hydrolysis.

Once hydrolyzed, the free fatty acids can be utilized in other metabolic processes or to produce energy. Triacylglycerols have a crucial role as an energy storage form in organisms, offering an easily accessible energy source when needed. This role is facilitated by their capacity to undergo hydrolysis.

Learn more about triacylglycerols:

brainly.com/question/31609332

#SPJ4

The complete question is:

Which of the following statements about triacylglycerols is NOT true.

they are an ester of glycerol and three fatty acids.

triacylglycerols that are oils contain mostly unsaturated fatty acids.

they function as a storage form of lipids.

they cannot be hydrolyzed.

The electrical force exerted by the comb on the piece of paper is about 5.84N.

We arrive at the answer by applying a basic law in the field of electrostatics, known as Coulomb's Law.

Coulomb's Law states two postulates about the electrostatic forces between bodies.

1. The Force between two charged bodies or particles is directly proportional to the product of the magnitude of charges.

  F ∝ |Q₁*Q₂|

2. The same force is also inversely proportional to the square of the distance between the bodies.

 F ∝ 1/R²

By combining the expression obtained through the postulates, we arrive at the following equation.

F = K(|Q₁*Q₂| / R²)

where K is called the electrostatic constant, equal to 9 * 10⁹ N·m²/C²

In the given question, if the piece of paper has also been polarized to the same amount of charge, it also holds a charge of 382nC. We can apply Coulomb's Law here to find the force between the comb and the paper.

F = 9 * 10⁹ * (382*382*10⁻¹⁸/15*15*10⁻⁶)

F = 9 *382²/225 *10⁻³

F = 5.836 N

Thus the force between the paper and the comb, mutually exerted on each other, is about 5.84N.

For more on Coulomb's Law,

brainly.com/question/29793807

#SPJ4

Hydropower uses the kinetic and potential energy of water to generate electricity.

Hydropower harnesses the energy of flowing or falling water to generate electricity. It takes advantage of the natural movement and gravitational potential energy of water to drive turbines, which in turn rotate generators to produce electricity. This renewable energy source relies on the conversion of the water's kinetic energy (energy of motion) and potential energy (energy stored in the elevated position of water) into mechanical energy and then electrical energy.

Hydropower is considered a clean and sustainable form of energy as it does not produce greenhouse gas emissions during operation and relies on a renewable resource – water. It plays a significant role in global electricity generation, providing a reliable and environmentally friendly source of power.

Learn more about Kinetic and potential energy from the link given below.

https://brainly.com/question/15764612

#SPJ4