amino acids are acids because they always possess which functional group?group of answer choicesphosphatecarboxylaminocarbonyl

Liquids and solids have fixed volumes because their particles are packed tightly and have little free space to move around.

When pressure is applied, the particles in these materials are forced closer together, but because of their fixed positions, they cannot move closer to each other. The result is that the volume remains constant.

The behavior of liquids and solids is different from gases, which are compressible and have variable volumes that can change when pressure is applied. This is because the particles in a gas have much more free space to move around and can be easily compressed or expanded by pressure.

It is important to note that while the volume of a liquid or solid may not change when pressure is applied, the density of the material can change. Increasing pressure can cause the particles to become more closely packed, increasing the material's density.

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Answer:

fifth

Explanation:

There is no explanation its the fifth largest

Answer:

9

Explanation:

Nitrogen-16

Atomic number of nitrogen= 7

electrons=7

protons=7

neutrons= ?

Nitrogen-'16'= 16 means the mass

16-7= 9

There are 9 neutrons in Nitrogen-16

The volume of Kr-93 produced is 0.117 L

To determine the volume of Kr-93 produced when 1.10 g of U-235 undergoes fission, we need to use the ideal gas law equation:

PV = nRT

Where:

P = Pressure (1.0 atm)

V = Volume (to be determined)

n = Number of moles of Kr-93 (to be determined)

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

T = Temperature in Kelvin (25°C = 298 K)

First, we need to calculate the number of moles of U-235:

Given mass of U-235 = 1.10 g

Molar mass of U-235 = 235.043924 g/mol

Number of moles of U-235 = (given mass)/(molar mass)

= 1.10 g / 235.043924 g/mol

≈ 0.00468 mol

Since the fission reaction involves the same number of moles of Kr-93, we can say that the number of moles of Kr-93 produced is also 0.00468 mol.

Now, we can rearrange the ideal gas law equation to solve for V:

V = (nRT) / P

= (0.00468 mol) * (0.0821 L·atm/(mol·K)) * (298 K) / (1.0 atm)

≈ 0.117 L

Therefore, the volume of Kr-93 produced is approximately 0.117 L

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Answer:

The tool is called Graduated cylinders

To produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta. To determine the amount of pasta required to produce 1000 kg of fishmeal, we need to consider the mass balance of the process. Let's break down the steps involved:

A. Extraction of fish oil:

The pasta obtained from the extraction stage contains 20% flour and 80% water. To calculate the amount of pasta, we need to determine the mass of flour and water in the pasta. Let's assume the total mass of the pasta is P kg.

Mass of flour = 20% of P = 0.2P kg

Mass of water = 80% of P = 0.8P kg

b. Drying of pasta:

During the drying stage, the pasta is dried in a rotary drum, resulting in fishmeal with 40% humidity. This means that the final fishmeal will contain 60% dry matter.

Let's assume the mass of the dried fishmeal is M kg.

Mass of dry matter = 60% of M = 0.6M kg

Since the dry matter in the fishmeal comes from the flour in the pasta, we can equate the mass of dry matter to the mass of flour:

0.6M kg = 0.2P kg

To produce 1000 kg of fishmeal, we want to find the corresponding value of P:

0.6M = 0.2P

P = (0.6M) / 0.2

P = 3M

Therefore, to produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta.

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Answer:

a motility organelle that enables movement and chemotaxis

Explanation:

pls mark brainlist

1.  Consider the reaction: 5 A + 3 B → 2 C The rate of the reaction is found to be 0.0486 M/s. Then, The rate of change of B is 0.01215 M/min.

2.  For the following zero order reaction, the rate constant is 0.0311.

If [A₀] = 8.68, calculate [A] at 2.9 seconds. Then, [A] = 8.66445 ≈ 8.7.

(1) For Reaction : 5A + 3B → 2C

R₁ : 0.080486 M/s = K[A][B]²          ---------------------- (1)

When half of the B has reacted, then,

⇒ R₂ = k[A][B/2]                   -------------------------- (2)

Dividing (2) and (1), we get:

   R₂÷ R₁ = K[A] [B/2] ÷ K[A] /[B]

⇒  R₂÷ R₁ = B²/4 ÷ B²

⇒ R₂÷ R₁ = 1/4

Therefore,

R₁ /4 = 0.0486/ 4

        = 0.01215 M/minute.

Therefore,

Consider the reaction: 5 A + 3 B → 2 C The rate of the reaction is found to be 0.0486 M/s. Then, The rate of change of B is 0.01215 M/min.

(2) For a Zero Order reaction:

t = K[A₀] [A] ÷ K               ------------------------- (1)

Given that:

t = 2.9 Second

and, k = 0.0311

Converting Seconds into minutes:

t = 2.9 second = 0.048 Minutes ≈ 0.5 Minutes.

Putting the values in equation (1)

⇒ 0.5 = 8.68 - [A] ÷ 0.0311

⇒ 0.5 × 0.0311 = 8.68 - [A]

⇒ 0.01565 - 8.68 = - [A]

⇒ [A] = 8.66445

Therefore, [A] = 8.66445 ≈ 8.7

Based on the zero order reaction, the rate constant is 0.0311. If [A]0 = 8.68, calculate [A] at 2.9 seconds. Then, [A] = 8.7

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Selecting resources with reliable credentials and expertise is important for any information you look up on any topic.

There are several factors to consider when selecting resources:

Credentials: The credentials of the author or organization providing the information are important to consider. Look for information from reputable sources such as academic institutions, government agencies, and well-established organizations.

Expertise: The expertise of the author or organization is also important. Look for information from experts in the field who have relevant education and experience.

Date: The date of the information is also important. Look for the most recent information on a topic as older information may be outdated or inaccurate.

Reliability: The reliability of the source should also be considered, look for sources that are peer-reviewed, or have been validated by reputable organization

Bias: Consider the potential bias of the source and how it might affect the information presented.

Purpose: The purpose of the source should also be considered, whether it is for academic, commercial or personal use.

Accessibility: The resource should be available easily, whether is free to access or paid, and it should be in the appropriate format and language.

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We can calculate the molarity by dividing the quantity of barium hydroxide in moles by the volume of the initial solution.

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On the left side of the chemical process, the reactants are Fe2O3 and C. On the right side of the chemical process, the products are Fe and CO2.

Because the total mass of iron and oxygen in the reactants and the product are equal, the law of conservation of mass is observed.

In a chemical equation, the substance or substances to the left of the arrow are referred to as reactants. When a chemical reaction first begins, a substance is said to be the reactant.

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most prolly option D

Explanation:

NaCl + H2SO4 -> Na2SO4 + HCl[g]

The reaction between between common salt and concentrated tetraoxosulphate(vi) acid will liberate Hydrogen chloride gas .

This is the type of reaction in which two or more elements/compounds react  together to form a new substance.

The reaction between common salt and concentrated tetraoxosulphate(vi) acid can be seen below:

NaCl + H2SO4 ⇒ Na2SO4 + HCl(g)

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Answer:

20°C and 2 atm is correct

Explanation:

Answer:

Allison walks 5 blocks west and 3 blocks south.

Explanation:

Vectors have both magnitude and direction. The attached figure shows the graph of Allison’s walk to school. She follows the black vectors to get to her school.

The first vector on the horizontal axis points towards west and there are 5 blocks. Initially, she walks 5 blocks in west direction.

The second vector points in the negative vertical axis. It means that she walks  3 block in south direction.

Hence, the correct option is (D) i.e. Allison walks 5 blocks west and 3 blocks south.

Answer:so that they may not get confused in which container did they place which chemical since some chemicals are simmilar in colour

Explanation:

The scientists labeled all containers so that they will sure about which container did they put which chemical in since some of the chemicals are similar in color or some are colorless.

Labeling in a lab is extremely important for many reasons. The laboratory is a fast-paced and efficient work zones due to proper workflow and organization.

Labeling helps to make sure that scientists are working with the correct samples or materials. Without labels, they run the danger of using the wrong chemicals or materials in experiments. This can cause experiments to fail and wastes time, resources, and funds or more than that.

Therefore, it is important for materials to work with by using labeling, as it ensures they are stored in the proper containers. The scientists label the containers to avoid confusion about the material being mixed with other materials.

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Dichlorocarbene is an intermediate species which is formed from the reaction of trichloromethane with a base. The intermediate CCl₃ further loss a Cl formes CCl₂.

The reactive intermediate with the chemical formula CCl₂ is called dichlorocarbene. Despite not having been isolated, this chemical species is a typical intermediate in organic chemistry since it is produced from chloroform. This twisted diamagnetic molecule enters other bonds quickly.

Carbenes contains two electrons in their valence shell and they are highly reactive and therefore used in many synthetic reactions.

CHCl₃ on reaction with a strong base such as NaOH produce the intermediate anion CCl₃⁻ by the elimination of water molecule.  This trichlorocarban further eliminates one Cl forms dichlorocarbene.

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The percent composition of water : 90.2%

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

mass of water = 4.6 g

mass of Copper chloride = 0.5 g

mass of solution :

\(\tt mass~solution=mass~water+mass~Copper~chloride\\\\mass~solution=4.6+0.5\\\\mass~solution=5.1~g\)

So the percent composition of water (%mass) :

\(\tt \%water=\dfrac{mass~water}{mass~solution}\times 100\%\\\\\%water=\dfrac{4.6~g}{5.1~g}\times 100\%\\\\\%water=90.2\%\)

Answer: 0.0500

Explanation:

The process of breaking down a larger molecule into its monomers is called hydrolysis. Hydrolysis is an essential chemical reaction that allows larger molecules such as polymers to be broken down into smaller, more manageable molecules called monomers.

Hydrolysis is a type of chemical reaction that uses water to break apart the bonds that hold larger molecules together, resulting in the production of monomers. Hydrolysis is the opposite of dehydration synthesis, which is the process by which monomers are joined together to form polymers.

Hydrolysis is a vital process that occurs in living organisms, allowing them to break down complex molecules such as proteins, carbohydrates, and fats into smaller molecules that can be used as energy sources or building blocks for other molecules.

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False, the ideal gas law, PV = nRT, can be related to the density of a gas by dividing both sides by RT.

The ideal gas law is given by the equation PV = nRT, where P is the pressure of the gas, V is the volume, n is the number of moles of gas, R is the universal gas constant, and T is the temperature in Kelvin.

Dividing both sides of the ideal gas law by V and RT yields:

(PV) / (VRT) = n / RT

Simplifying the left-hand side of the equation gives:

P / RT = n / V

The quantity n / V is the molar density of the gas, represented by the symbol ρ. Therefore, we can rewrite the equation as:

P / ρ = RT

Multiplying both sides of the equation by the molar mass of the gas, represented by the symbol M, gives:

(PM) / ρ = RTM

This equation relates the pressure, density, temperature, and molar mass of an ideal gas. Therefore, the statement in the question is false, as the ideal gas law is related to the density of a gas by dividing both sides by pressure and the molar density, and multiplying by the molar mass.

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The equivalency solution has a pH of 2.624.

Nitrous acid is frequently created by adding a mineral acid to aqueous sodium nitrite solutions. Typically, acidification is carried out at ice-cold temperatures, and HNO2 is consumed on-site. Nitrous acid in its free form is unstable and breaks down quickly.

In a neutralization process, weak nitrous acid (HNO2) reacts with strong basic KOH.

HNO2 + KOH → KNO2 + H2O

Then, we determine how many moles of KOH were used:

volume KOH x concentration equals moles KOH. KOH

moles KOH = 0.190 L x 0.377 mol/L

moles KOH = 0.07153 mol

Next, we calculate the initial concentration of HNO2:

concentration HNO2 = moles HNO2 / volume HNO2

concentration HNO2 = 0.07153 mol / 0.190 L

concentration HNO2 = 0.3765 M

[HNO2] = 0.5 x 0.3765 M

[HNO2] = 0.1883 M

The following equation can be used to model how nitrous acid dissociates in water:

HNO2 + H2O ⇌ H3O+ + NO2-

The following equation relates the pKa to the acid dissociation constant, Ka, for this reaction:

pKa = -log Ka

So we can find the Ka value from the given pKa:

pKa = -log Ka

3.35 = -log Ka

Ka = 10⁻³

Ka = 4.47 x 10⁻⁴

The relationship shown below is true for the concentrations of the species involved at equilibrium:

Ka = [H3O+][NO2-] / [HNO2]

Ka = [H3O+][NO2-] / [HNO2]

Ka = [H3O+] [HNO2]

Solving for [H3O+], we get:

[H3O+] = Ka / [HNO2]

[H3O+] = (4.47 x 10⁻⁴) / (0.1883 M)

[H3O+] = 0.002374 M

Finally, we can calculate the pH of the solution:

pH = -log[H3O+]

pH = -log(0.002374)

pH = 2.624

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The pillar of sustainability broken by recycling electronics in India is environmental sustainability. Implementing a law that restricts electronics recycling to the US would not necessarily be the most effective solution, as it overlooks the complex global dynamics of electronic waste management.

Recycling electronics in India often involves improper disposal methods, such as burning or dismantling without proper safety measures. This leads to environmental pollution, including the release of hazardous substances into the air, soil, and water, thus violating the principle of environmental sustainability.

However, simply mandating that electronics can only be recycled in the US may not be the most optimal solution. Electronic waste is a global issue, and restricting recycling to a single country disregards the fact that electronic products are manufactured and consumed worldwide. A more comprehensive approach to addressing electronic waste would involve international cooperation, strict regulations, and monitoring of recycling practices to ensure they meet environmental standards.

Efforts should focus on improving recycling practices globally, including promoting responsible electronic waste management, developing sustainable recycling infrastructure in multiple countries, and encouraging the adoption of safe and environmentally friendly recycling practices. This approach would foster global sustainability and address the challenges associated with electronic waste disposal more effectively than a geographically limited restriction.

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Answer: A: Carbonic

Explanation: Quizlet confirmed

Answer: a) pH = 2.56 , acidic

b) pH = 2.38, acidic

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

\(pH=-\log [H^+]\)

a) \([H^+]=2.7\times 10^{-3}\)

Putting in the values:

\(pH=-\log[2.7\times 10^{-3}]\)

\(pH=2.56\)

Thus as pH is less than 7, the solution is acidic.

b) \([H^+]=4.1\times 10^{-3}\)

Putting in the values:

\(pH=-\log[4.1\times 10^{-3}]\)

\(pH=2.38\)

Thus as pH is less than 7, the solution is acidic.

Sodium chloride solution cannot be used as the electrolyte to produce sodium metal because water is present in the solution, and water molecules can be electrolyzed to produce hydrogen gas, interfering with the desired production of sodium metal.

In more detail, during electrolysis, the electric current is passed through the electrolyte to facilitate the breakdown of the compound into its constituent elements. In the case of sodium chloride solution, water (H2O) molecules are also present. At the cathode, where reduction occurs, water can be electrolyzed instead of sodium ions (Na+) to produce hydrogen gas (H2) and hydroxide ions (OH-). This means that instead of obtaining sodium metal, the electrolysis of sodium chloride solution would predominantly yield hydrogen gas. To produce sodium metal, it is necessary to use molten sodium chloride, where water molecules are absent and the sodium ions can be selectively reduced to form sodium metal.

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The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.

The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):

E = V * Q

Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):

Q = E / V

Substituting the given values, we have:

Q = 64 MJ / 330 V

To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:

Q = (64 * 10^6 J) / 330 V

Calculating the division:

Q ≈ 193,939.39 Coulombs

Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.

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The one that best describes the regioselectivity and stereospecificity in the Bronsted acid-catalyzed addition of water to an alkene reaction is Markovnikov orientation with syn-addition. Hence option A.

The preference of E and Y for bonds with carbon atoms an or b is referred to as the Markovnikov orientation. The example below demonstrates how, depending on the reaction conditions, a proton acid HY can add to the -bond of an unsymmetrical alkene with either a Markovnikov or an anti-Markovnikov orientation.

When hydrogen itself forms a double bond with the least-substituted carbon atom in asymmetrical alkenes or alkynes, the Markownikoff or Markovnikov rule determines the orientation of the electrophilic addition of hydrogen halides. (or triple bond). So, as conculsion, option A is correct.

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Complete question - which of the following describes correctly about the regioselectivity and stereospecificity in the bronsted acid-catalyzed addition of water to an alkene reaction?

Group of answer choices

1. markovnikov orientation with syn-addition

2. markovnikov orientation with anti-addition

3. anti-markovnikov orientation with syn-addition

4. anti-markovnikov orientation with anti-addition

5. markovnikov orientation with both syn- and anti-addition

The concentration of the chloride ion is obtained as 0.20 mol/L.

We have to note that the concentration of the solution has to with the amount of the solute that we have in the system. In this case, we can see that we have the Iron (III) chloride (FeCl3) which completely dissociates when dissolved in water.

Now we are told that the concentration of the solute is 0.60 mol/L solution of Iron (III) chloride but each FeCl3 molecule produces three Cl- ions, the concentration of Cl- ions in the solution will be three times the concentration of FeCl3.

Hence;

Concentration of the chloride ion is;

0.60 mol/L/3

= 0.20 mol/L

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