The isolation of p-aminobenzoic acid is the trickiest step due to the formation of an amino compound. Why don't we do the esterification step prior to the deprotection step?

2. 51 L of a gas at standard temperature and pressure is compressed to 451 mL. The new pressure of the gas is 54 atm.

To find the new pressure of the gas, we can use Boyle's Law, which states that the pressure and volume of a gas are inversely proportional at constant temperature.

Boyle's Law equation: P1V1 = P2V2

Given:

Initial volume (V1) = 51 L

Final volume (V2) = 451 mL = 0.451 L (using the conversion factor: 1 L = 1000 mL)

Initial pressure (P1) = standard pressure = 1 atm

Now we can substitute these values into Boyle's Law equation:

1 atm * 51 L = P2 * 0.451 L

Simplifying the equation:

51 = 0.451 * P2

Dividing both sides of the equation by 0.451:

51 / 0.451 = P2

Calculating:

P2 ≈ 113.3 atm

Therefore, the new pressure of the gas is approximately 113.3 atm.

The new pressure of the gas, when compressed from 51 L to 451 mL, is approximately 113.3 atm.

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The compounds that would end in  "-ide" are;

1) Na₂S

2) CO2

3) AIP

We know that chemical compounds can be identified by the name of the compound. Also, the name of the compound reflects the kind of species that we have in the compound. The task that we have here is that we need to find out the three compounds that would have the ending  "-ide" in their names.

We have to know that the names of chemical compounds are often chosen by the International Union of Pure and Applied Chemistry (IUPAC). These rules are revised from time to time and are thus updated in order to help us to identify compounds.

It is important to note that the compounds whose names are most likely to end in the term  "-ide" would be the binary compounds that are composed of the metals and the non metals.

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The given reaction is a dehydrohalogenation reaction. The following reaction depicts the dehydrohalogenation of 3-bromopentane:Thus, 3-bromopentane gives the alkene shown as the major product of the reaction.

Dehydrohalogenation is an elimination reaction, which involves the removal of a proton from the β-carbon, and the halide ion from the α-carbon of the alkyl halide. The removal of the proton and halide ion from the adjacent carbons forms a pi bond.  This type of reaction gives an alkene as the final product.

Therefore, the alkyl bromide which can give the alkene shown as the major product of the following reaction is the one which possesses adjacent beta-hydrogen atoms.

The bromoalkane shown in the reaction below has three beta-hydrogens so that 3- bromopentane will give 2-pentene as the major product. The following reaction depicts the dehydrohalogenation of 3-bromopentane:Thus, 3-bromopentane gives the alkene shown as the major product of the reaction.

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Answer:

4

Explanation:

If an electron shell can hold a maximum of 32 electrons the value of n = 4

The common feature of the illustrated reactions showing the linking of monomers to form macromolecules is that they all involve a condensation reaction, where a molecule of water is eliminated from the monomers to form a covalent bond between them.

This process is also known as dehydration synthesis. During this reaction, the monomers lose a hydroxyl group (-OH) from one end and a hydrogen atom (-H) from the other end, resulting in the formation of a covalent bond between the two monomers. The resulting macromolecule has a higher molecular weight than the individual monomers. This process is essential in the formation of many biological macromolecules such as proteins, nucleic acids, and polysaccharides. The chemical process involved in the formation of macromolecules and highlights the importance of condensation reactions in the formation of these complex molecules.

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Energy is inversely proportional to the wavelength of a wave. Which would have the GREATEST energy. A wave with a wavelength of  5  meters.

The relationship between wavelength and energy is given as :

E = hf

E = h c / λ

where,

E = energy

h = Planck constant

c = speed of light

λ = wavelength

So, energy is inversely proportional to wavelength,  therefore, the wave having least amount of wavelength will have greatest amount of energy. So, according to the given value . the wavelength 5 m will have greatest energy.

Thus, Energy is inversely proportional to the wavelength of a wave. Which would have the GREATEST energy. A wave with a wavelength of  5  meters.

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in the classical free electron model, the neglect of electron-ion interaction is referred to as the free electron approximation. The correct option is (ii) Only.

This approximation assumes that the interaction between electrons and ions can be ignored, treating the electrons as free particles moving in a periodic potential without any significant influence from the ions. The independent electron approximation, on the other hand, assumes that the behavior of each electron can be considered independently of the others. The Drude electron-ion approximation incorporates electron-ion interactions and is not part of the classical free electron model. Therefore, the correct option is (ii) Only.

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Answer:

B.Gravity is the same between all objects on Earth.

Answer:

6 days

Explanation:

The following data were obtained from the question:

Original amount (N₀) = 100 mg

Amount remaining (N) = 6. 25 mg

Time (t) = 24 days

Half life (t½) =?

Next, we shall determine the decay constant. This can be obtained as follow:

Original amount (N₀) = 100 mg

Amount remaining (N) = 6. 25 mg

Time (t) = 24 days

Decay constant (K) =?

Log (N₀/N) = kt / 2.303

Log (100/6.25) = k × 24 / 2.303

Log 16 = k × 24 / 2.303

1.2041 = k × 24 / 2.303

Cross multiply

k × 24 = 1.2041 × 2.303

Divide both side by 24

K = (1.2041 × 2.303) / 24

K = 0.1155 /day

Finally, we shall determine the half-life of the isotope as follow:

Decay constant (K) = 0.1155 /day

Half life (t½) =?

t½ = 0.693 / K

t½ = 0.693 / 0.1155

t½ = 6 days

Therefore, the half-life of the isotope is 6 days

Answer:

Ice Cubes. When water freezes into ice cubes, the energy is released in the form of heat. ...

Formation Of Snow In Clouds. The process of snow formation is an exothermic reaction. ...

Hot Packs. ...

Rusting Of Iron. ...

Burning Of Candles. ...

Lightning Of Match. ...

Setting Cement And Concrete.

is any musical instrument that creates sound primarily by the vibration of the instrument itself without the use of air flow

Answer:

18.02 g/mol

Explanation:

Add the atomic mass of the parts of H2O

1.01 + 1.01 + 16 = 18.02

H H O

Here's a step to draw resonance structures in organic chemistry:

There must be genuine Lewis structures in every resonance structure. (Remember that all the guidelines that apply to Lewis structures still hold true here.) The only difference in resonance structures' atom connection and electron configuration. (Electrons move; atoms NEVER do.)

The electron count and net charge are identical for all resonance configurations. (An atom's formal charge may differ, but the net charge, which is the total of all charges, must be the same.)

Only electrons and lone pair electrons (NEVER move bonds!) can be transferred by employing one of the following three transformations to move electrons from a region with a greater electron density to one with a lower electron density:

To depict the motion of the electrons in the "original" resonance structure, use curved arrows. By following the arrows, the "new" resonance structure should be a "product" that is automatically created.

Determine the "new" structure's formal charge and note any non-zero formal charges.

example attached below

Only the electrons can move around in this example because there is only one link and no lone pairs. The low electron density region, or carbocation, is present next to the bond. As a result, it makes sense to transfer the electrons to the position next to the carbocation to create another bond, which results in the "new" structure. Here, the two resonance structures are identical.

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Answer:

it is when a state in which opposing forces or influences are balanced.

A example of equilibrium is in economics  supply and demand are equal.

Explanation:

Answer:

Compromise of 1850

Explanation:

Answer:

thanks

Explanation:

youre awesome

Answer:

Option C, KCl

Explanation:

It is the KCl that gives a lilac flame during the flame test.

The color given by different salt during the flame test are as follows -

a) KCl - Lilac

b) NaCl - yellow

c) MgCl - Orange-red

d) LiCl - red (crimson)

Hence, option C is correct

ΔH° for the reaction Fe3O4(s)+2C (graphite) → 3 Fe(s) + 2CO2(g) is - 725kj/mol⁻¹.

Hess's law states that if a process can be showed as the sum of two or more steps, the enthalpy change for the overall process is the sum of the ΔH values for each step.

Fe3O4(s)+2C (graphite) → 3 Fe(s) + 2CO2(g),    

We invert (1) and change the sign of  ΔH

Fe3O4(s)   →  3Fe(s)+3CO2(g)  ΔH = 1118

We multiply (2) by 3

2C(g)+1/2O2(g) → CO2(g)         ΔH = - -394   (2)

3CO(g)+3/2O2(g)→3CO2(g)         ΔH = 1118

We add (1) and (2)

Fe3O4(s)  →  3Fe(s)+3CO2(g)  ΔH = 824.2 kJ

3CO(g)+3/2O2(g)→3CO2(g)         ΔH = -848.1 kJ

Fe3O4(s)+2C (graphite) → 3 Fe(s) + 2CO2(g),    

Therefore, ΔH° = - 725kj/mol⁻¹

Thus,  ΔH° for the reaction Fe3O4(s)+2C (graphite) → 3 Fe(s) + 2CO2(g) is - 725kj/mol⁻¹.

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The new pressure of the confined gas in the 2-liter container at 160 K is approximately 6.28 atm.

To solve this problem, we can use the ideal gas law, which states:

PV = nRT

Where:

P = Pressure

V = Volume

n = Number of moles

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

T = Temperature (in Kelvin)

Let's calculate the number of moles of hydrogen gas in the initial 4-liter container:

P1 = 800 torr

V1 = 4 liters

T1 = 320 K

Using the ideal gas law, we can rearrange the equation to solve for n:

n = (P1 * V1) / (R * T1)

Substituting the values:

n = (800 torr * 4 L) / (0.0821 L·atm/mol·K * 320 K)

n ≈ 0.097 moles

Now, let's calculate the new pressure when the gas is transferred to the 2-liter container and cooled to 160 K:

V2 = 2 liters

T2 = 160 K

Using the ideal gas law again, we can solve for the new pressure (P2):

P2 = (n * R * T2) / V2

Substituting the values:

P2 = (0.097 moles * 0.0821 L·atm/mol·K * 160 K) / 2 L

P2 ≈ 6.28 atm

Therefore, the new pressure of the confined gas in the 2-liter container at 160 K is approximately 6.28 atm.

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The pressure of the gas inside the cylinder is 52.90 atm

Given is the number of moles of gas, the temperature and the volume of the gas and we need to find the pressure of the gas inside the cylinder, for this we can use the ideal gas law equation:

PV = nRT

Where:

P = Pressure of the gas (in units of pressure, such as atm)

V = Volume of the gas (in liters)

n = Number of moles of the gas

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

T = Temperature of the gas (in Kelvin)

First, let's convert the temperature from Celsius to Kelvin:

T = 25.0 °C + 273.15 = 298.15 K

Now we can substitute the values into the ideal gas law equation:

P × 12.5 L = 27.0 moles × 0.0821 L·atm/(mol·K) × 298.15 K

Simplifying the equation:

P × 12.5 L = 661.2587 L·atm

Dividing both sides by 12.5 L:

P = 661.2587 L·atm / 12.5 L

P ≈ 52.90 atm

Therefore, the pressure of the gas inside the cylinder is approximately 52.90 atm.

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We can use the ideal gas law equation to determine the pressure of a gas within a cylinder:

PV = nRT

Where:

P is the pressure of the gas (in units of pressure, such as atm)

V is the volume of the gas (in units of volume, such as liters)

n is the number of moles of the gas

R is the ideal gas constant (0.0821 L·atm/(mol·K))

T is the temperature of the gas (in units of temperature, such as Kelvin)

we need to convert the temperature from Celsius to Kelvin:

T(K) = T(°C) + 273.15

T(K) = 25.0 °C + 273.15

T(K) = 298.15 K

Now we can plug the data into the ideal gas law equation as follows:

P * 12.5 L = 27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K

Simplifying the equation:

P = (27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K) / 12.5 L

Calculating the pressure:

P ≈ 5.046 atm

As a result, the gas inside the cylinder is under a pressure of about 5.046 atm.

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Answer:

the answer is true

Explanation:

the reason why is because if you look at it a chemical in a repeating form os a compound so that means it is the same properties for food.

Answer:

True

Explanation:

Many different species eat grass, and rabbits can eat other plants besides grass. Foxes, in turn, can eat many types of animals and plants. Each of these living things can be a part of multiple food chains.

Answer:

to satisfy the law of conservation of mass

Explanation:

have great day

Answer:

It is necessary for chemical equations to be balanced because of the law of conservation of mass (the mass of the products = the mass of the reactants).

Chemical equations follow/represent this law

Answer: H2O + CO2 ---> O2 + C6H12O6

Explanation:

The number of moles of hydrochloric acid, HCl in 50 cm³ of 0.2 M hydrochloric acid, HCl solution is 0.01 mole

We'll begin by listing the various parameters given in the question. This is given below:

The number of mole of HCl in the solution can be obtained as follow:

Molarity = Number of mole / volume

Cross multiply

Number of mole = molarity × volume

Number of mole = 0.2 × 0.05

Number of mole = 0.01 mole

Thus, the number of mole in the solution is 0.01 mole

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1000 g of water condenses at 100°C in a home radiator (changes from gas to liquid).

Equation

Q=m x Hvap

    where m= mass.

= 1000. gx2260J/g 

Q=2,260,000 J

What is Condensation?

Condensation, which is the opposite of vaporization, is the transformation of matter from its gaseous state into its liquid state. The water cycle is the most frequent use of the phrase. [1] Another way to describe it is as the transformation of water vapour into liquid water when it comes into touch with a solid, liquid, or cloud condensation nucleus in the atmosphere. Deposition is the term for the change that occurs when the gaseous phase directly transitions into the solid phase.

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The atomic radius trend in the periodic table can be defined as the trend of radius size as you move from left to right across a period, and from top to bottom within a group. This trend is due to the changes in electron configuration and the number of energy levels of an atom.

The atomic radius trend in the periodic table decreases as you move from left to right across a period, and increases as you move from top to bottom within a group. The decrease in atomic radius across a period is due to an increase in the number of protons in the nucleus and a corresponding increase in the attractive force that the protons exert on the electrons in the valence shell. This causes the electrons to be drawn closer to the nucleus and thus results in a smaller atomic radius. The increase in atomic radius down a group is due to the addition of new energy levels, which increases the distance between the valence electrons and the nucleus. This results in a larger atomic radius.Overall, the atomic radius trend across the periodic table can be explained by the balance between the attractive force of the nucleus and the repulsive force of the electrons. As you move across a period, the attractive force of the nucleus increases, causing a decrease in atomic radius, while as you move down a group, the addition of energy levels causes an increase in atomic radius.

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An exothermic reaction releases energy in the form of heat, light or sound, whereas an endothermic reaction absorbs energy from its surroundings. In other words, exothermic reactions release heat and endothermic reactions absorb heat. Exothermic reactions are characterized by a negative change in enthalpy, while endothermic reactions have a positive change in enthalpy. An example of an exothermic reaction is the combustion of a fuel, while an example of an endothermic reaction is the process of melting ice.
The difference between exothermic and endothermic reactions lies in the energy changes. In an exothermic reaction, energy is released to the surroundings, typically in the form of heat. Conversely, in an endothermic reaction, energy is absorbed from the surroundings, usually as heat.Exothermic and endothermic are two terms used to describe the direction of heat flow in a chemical or physical process.

Exothermic processes release heat into the surrounding environment, while endothermic processes absorb heat from the environment.An exothermic reaction is a chemical reaction that releases heat into the surrounding environment, typically in the form of light or heat energy. This type of reaction is characterized by a negative enthalpy change, meaning that the products of the reaction have less energy than the reactants. Examples of exothermic reactions include combustion reactions, such as burning of fuels like wood, coal or gas, and oxidation of metals, such as rusting of iron.

In contrast, an endothermic reaction is a chemical reaction that absorbs heat from the surrounding environment, typically causing the reaction mixture to feel colder. This type of reaction is characterized by a positive enthalpy change, meaning that the products of the reaction have more energy than the reactants. Examples of endothermic reactions include the melting of ice, the evaporation of water, and the reaction between citric acid and baking soda in a cold pack.Similarly, physical processes can also be exothermic or endothermic. For example, the process of condensation of water vapor into liquid water releases heat, making it an exothermic process. On the other hand, the process of melting of ice absorbs heat, making it an endothermic process.

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The results of a scientific investigation would be considered reliable only if all aspects of the investigation have been carefully planned and executed.

A scientific investigation is a process that is used to answer questions or solve problems about the natural world using the scientific method. The scientific method is a systematic approach that involves formulating a hypothesis, designing an experiment, collecting and analyzing data, and drawing conclusions based on the results.The reliability of the results of a scientific investigation depends on several factors. First, the experiment must be carefully planned to ensure that it is well-designed and that all variables are controlled. This means that the experiment should be designed to test a specific hypothesis and that all variables that might affect the results of the experiment should be controlled or eliminated.Second, the experiment must be executed carefully to ensure that all procedures are followed correctly and that all data is collected accurately. This means that the experiment should be conducted in a controlled environment and that all data should be recorded and analyzed accurately.Finally, the results of the experiment must be analyzed carefully to ensure that they are reliable and valid. This means that the data should be analyzed using appropriate statistical methods to determine whether the results are statistically significant and that any conclusions drawn from the data are based on sound reasoning and logic.In conclusion, the results of a scientific investigation would be considered reliable only if all aspects of the investigation have been carefully planned and executed.

This means that the experiment must be well-designed, carefully executed, and analyzed using appropriate statistical methods to ensure that the results are reliable and valid.

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