A=2cm^2 C=8nF >A=2cm^2 C=4nF > A=4cm^2 C=2nF = A=8cm^2 C=2nF > A=1cm^2 C=1nF = A=4cm^2 C=1nF Rank the capacitors on the basis of the charge stored on the positive plate.

To make up 1 L of a 0.5 M EDTA solution starting with the free acid, you would need to adjust the pH to 7.0 by adding 10 M NaOH. The amount of NaOH required will depend on the initial pH of the EDTA solution and the desired final pH.

As for whether the solution will have a pH buffering capacity, it depends on the range of the pH buffer. EDTA is a weak polyprotic acid with four dissociation constants, and its buffering capacity will be dependent on the ratio of the protonated to deprotonated form of EDTA at a particular pH.

A pH buffer is typically considered to have buffering capacity over a range of pH values close to the pKa of the buffer. Since the pKa values of the four acetic acid groups on EDTA range from 2.0 to 10.26, it's possible that the solution may have buffering capacity over a broad pH range, but it will depend on the final pH achieved after adding NaOH and the concentration of EDTA in the solution.

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--The given question is incomplete, the complete question is

"To make up 1 l of a 0.5 m solution of EDTA starting with the free acid, approximately how much 10 m NaOH will have to be added to adjust the ph to 7.0? do you expect this solution to have a ph-buffering capacity? the pkas of the four acetic acid groups on edta are 2.0, 2.67, 6.16 and 10.26."--

Answer:

the final mole of the flexible container = 12.92 moles

Explanation:

Given that :

initial volume of a flexible container = 6.13 L

initial mole of a flexible container = 6.51 mol

final volume of a flexible container = 18.3 L

final mole of a flexible container = ???

Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the container.

Therefore,

\(n= \dfrac{V_2*n_1}{V_1}\)

\(n= \dfrac{18.3*6.51}{6.13}\)

n = 19.43

\(n=n_1+n_2\)

19.43 = 6.51 + n₂

n₂ = 19.43 - 6.51

n₂ = 12.92 moles

Thus; the final mole of the flexible container = 12.92 moles

Density =mass/volume

=6/3

=2

Yes. Solubility is 0.070 kg/L

Solution:

Solubility = mass / Volume

Solubility = (0.210kg)/(3L) = 0.070 kg/L

Solubility is defined as the maximum amount of a substance that will dissolve in a specified amount of solvent at a specified temperature. Solubility is a characteristic property of a particular solute/solvent combination, and different substances have very different solubilities.

Adding sugar cubes to your tea or coffee is a common example of a solution. The ability of a sugar molecule to dissolve easily is called solubility. The term solubility can therefore be defined as the property of a substance to dissolve in a particular solvent. Water solubility is a measure of the amount of a chemical that can be dissolved in water at a given temperature.

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Answer:

The final step of the scientific method is to communicate the results​

The energy of the electron decreases as the principal quantum number increases, indicating that electrons in higher energy levels are farther away from the nucleus and have lower energies.

The expression for the energy of an electron in the electron orbit of a hydrogen atom can be calculated using the formula:

E = (-13.6 eV) / n^2

Where E represents the energy of the electron, n is the principal quantum number representing the energy level or orbit, and -13.6 eV is a constant value that represents the energy of the electron in the first orbit.

For example, if we consider the energy of an electron in the first orbit (n=1), the energy can be calculated as:

E = (-13.6 eV) / (1^2) = -13.6 eV

If we consider the energy of an electron in the second orbit (n=2), the energy can be calculated as:

E = (-13.6 eV) / (2^2) = -3.4 eV

The energy of the electron decreases as the principal quantum number increases, indicating that electrons in higher energy levels are farther away from the nucleus and have lower energies.

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Atoms of particles are so small that they cannot be divided further by any physical means.

According to John Dalton, atoms are the smallest, indivisible particles of elements.

However, it was later found out that chemically, atoms consist of protons, neutrons, and electrons.

Thus, the indivisibility of atoms that John Dalton was referring to must be that of physical division.

In other words, the particles of atoms are so small that dividing them further using physical means is absolutely impossible.

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O2 is a reactant in chemical reactions, meaning that it is the substance that is involved in the process of producing new products.

It can also be a product in certain types of reactions. O2 is a molecule composed of two oxygen atoms, and it is essential for life as it is a byproduct of photosynthesis. In chemical reactions, O2 is highly reactive, often forming bonds with other elements and molecules. This is due to its low ionization energy and high electronegativity. When O2 is involved in a reaction, the reaction often requires a large amount of energy to initiate, but the products have lower energy than the reactants, releasing energy in the process. O2 is also an important component of respiration in most organisms, allowing them to produce energy from the breakdown of organic molecules. In general, O2 is an essential element in most processes involving energy production, as it is involved in numerous oxidation-reduction reactions.

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Answer:

Nuclear Fission is a nuclear reaction or a Radioactive decay progress in which the necleus of an atom splits into two or more smaller, lighter neclei

List of the metals that form only one type of ion (that is, metals whose charge is invariant from one compound to another) is below,

Here , we have to list the metals that form only one type of ion (that is, metals whose charge is invariant from one compound to another) and have to identify the group numbers of these metals.

Co is stable in both +2 and +3 oxidation state. So it can variable. Li only have +1 charge. So it is invariable from one compound to other.

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Answer:

Explanation:

Ground state electron configuration of potassium (K) is 1s2 2s2 2p6 3s2 3p6 4s1. The valency of the element is determined by electron configuration in the excited state. This electron configuration shows that the last shell of the potassium atom has an unpaired electron (4s1). So the valency of potassium is 1.

Answer: Its a weak base

Explanation: Clicked on that and got the answer right. :)

The image that has been shown has helped us to know that the particles are weak bases. Option A

A chemical species or substance that has a restricted capacity to receive or interact with protons (H+ ions) in a solution is said to be a weak base. Weak bases only partially ionize or interact with water, in contrast to strong bases, which totally breakdown into ions in water and quickly take protons.

Compared to strong bases, weak bases have a lesser affinity for protons and fewer alkaline characteristics. They are frequently identified by the considerably lower concentration of hydroxide ions (OH-) in a solution and their imperfect dissociation equilibrium.

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Answer:

The independent variable in this experiment is what he feeds the chickens (rice or corn).

Explanation:

The independent variable is the variable the experimenter manipulates or changes.

The chlorine curve is a graphical representation of the relationship between the concentration of chlorine in water and the amount of time it has been in contact with that water. The curve typically has three distinct regions: the initial or breakpoint region, the plateau region, and the overdosing region. Each of these regions has different characteristics and implications for water treatment.

The initial or breakpoint region is where the chlorine reacts with organic and inorganic compounds in the water, breaking them down and forming new compounds. This region is characterized by a rapid decrease in chlorine concentration and the formation of a measurable residual.
The plateau region is where the majority of the disinfection occurs. Chlorine concentration is relatively stable, and there is a consistent residual present. The residual in this region is typically measured and used to monitor the effectiveness of the disinfection process.
The overdosing region is where the chlorine concentration exceeds the demand for disinfection. Chlorine is present in excess, and the residual can be quite high. This region is typically avoided in water treatment, as excessive chlorine levels can be harmful to consumers.
The strongest, most aggressive form of chlorine is found in the initial or breakpoint region of the chlorine curve. This is because the chlorine is reacting with contaminants in the water, using up the chlorine rapidly and forming new, more reactive compounds. As the chlorine progresses through the curve and reaches the plateau region, it becomes less reactive and forms a more stable residual.
In conclusion, understanding the chlorine curve and where to measure residual chlorine levels is critical in ensuring safe drinking water. The breakpoint region of the curve is where the most aggressive form of chlorine is found, and monitoring chlorine levels in the plateau region is important in maintaining an effective disinfection process.

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The chlorine curve is a graphical representation of the relationship between the concentration of chlorine in water and the time it takes for that chlorine to disinfect the water. It is used to determine the appropriate amount of chlorine to add to water in order to achieve a desired level of disinfection.

The measurable residual refers to the amount of chlorine that remains in the water after the disinfection process is complete. This residual is important because it ensures that the water remains free from harmful microorganisms as it moves through the distribution system. The chlorine curve has three distinct locations where a measurable residual can be detected: the breakpoint, the peak, and the tail. The breakpoint is where all of the chlorine has reacted with the organic and inorganic matter in the water and is no longer effective. The peak is where the highest concentration of chlorine is found and where the most aggressive form of chlorine is located. The tail is where the residual chlorine gradually decreases as it continues to react with any remaining organic and inorganic matter in the water. Therefore, the answer to the question is that the strongest, most aggressive form of chlorine is found on the peak portion of the chlorine curve. This is where the highest concentration of chlorine is located and where the disinfection process is most effective. However, it is important to note that excessive amounts of chlorine can be harmful to human health and may result in taste and odor issues in the water. Thus, it is crucial to maintain the appropriate residual chlorine level for safe and effective disinfection.

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His blood volume will increase and its osmolarity will decrease after administering 5 liters of 300moS fluid.

Osmoles of solute per liter of solution serve as a quantitative unit for expressing the concentration of osmotically active particles in solution, or osmolarity. The term "osmolality" refers to the quantity of solute particles per liter of solution, and it is commonly stated in terms of osmoles per liter (Osm/L) or milliosmoles per liter (mOsm/L).

The direction of fluid transport within an organism can be determined by the plasma osmolality and oncotic pressure, therefore it's critical to have emergency care on hand in case it's required during labor and after delivery. Insufficient blood flow to bodily organs causes postpartum hemorrhage (PPH), which can result in shock and death.

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Hyperventilation, with a resulting decrease in \(PaCO_2\), is an expected compensatory reaction to the acid-base disorder of metabolic acidosis.

Metabolic acidosis is a condition characterized by a decrease in blood pH and bicarbonate levels, which can occur due to various causes such as diabetic ketoacidosis, lactic acidosis, renal failure, and ingestion of certain toxins. In response to this acidosis, the body tries to compensate by increasing respiration, resulting in hyperventilation.

Hyperventilation helps to decrease the concentration of carbon dioxide (\(CO_2\)) in the blood, which is an acid. By breathing rapidly and deeply, more \(CO_2\) is expelled from the body, which helps to restore the acid-base balance and increase the pH of the blood towards a normal level. This is known as respiratory compensation for metabolic acidosis.

However, it is important to note that hyperventilation can also lead to respiratory alkalosis if it continues for a prolonged period of time, resulting in a decrease in \(PaCO_2\) below normal levels. Therefore, careful monitoring and management of acid-base disorders is necessary to ensure appropriate compensation and avoid potential complications.

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Answer:

T=846K

Explanation:

We can use the formula for the Ideal Gas Equation, which is

\(PV=nRT\)

P=pressure

V=volume

n=mols of gas

R=constant (0.08201 L-atm/mol-K)

T=temperature

We will have to rearrange to equation to find temperature, which is

\(T=\frac{PV}{nR}\)

Time to solve:

\(T=\frac{(2.50 atm)(10.30L)}{(0.371 mols)(0.08206 L-atm/mol-K)}\)

\(T=846 K\)

If you want to convert to Celsius, subtract 273 to your answer, which will get you 573ºC.

Answer:

atomic weight..................

Michael Faraday discovered electromagnetic induction. This discovery changed the field of electrical power generation and transmission, shaping modern electrical technologies.

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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From the balanced chemical equation of the reaction between Fe₂O₃  and H₂ it is clear that, 6 moles of H₂ gives 4 moles of Fe. Then, 4.5 moles of H₂ will produce 3 moles of Fe.

Ferric oxide, Fe₂O₃  is an oxide of iron in which Iron is in + oxidation state. It is the reddish brown rust formed on the surface of metallic parts by the action of air or water.

The reaction between Fe₂O₃ and hydrogen gas is written as:

\(\rm 2Fe_{2}O_{3} + 6H_{2} \rightarrow 4Fe + 6H_{2}O\)

As per this reaction, 6 moles of hydrogen gas gives 4 moles of Fe metal.

The number of moles of Fe metal produced from 4.5 moles of H₂ is calculated as follows:

no.of moles of Fe = (4.5 ×4)/6 = 3 moles.

Therefore, 4.5 moles H₂ gas produce 3 moles of Fe metal in the reaction.

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Answer:First one is acheolgogist

Explanation:

Recrystallization is a common technique used to purify solid compounds by dissolving them in a solvent at high temperature, and then allowing the solution to cool slowly to form crystals.

The solvent should have the following properties:

The solubility of the compound should be high at high temperature and low at low temperature. This allows the compound to dissolve completely at high temperature and then precipitate out as pure crystals at low temperature.

The solvent should be relatively volatile and have a low boiling point, so that it can be easily removed from the recrystallized solid by evaporation or vacuum filtration.

The solvent should not react with the compound being recrystallized, so that it does not introduce impurities into the final product.

The effectiveness of the recrystallization solvent can be evaluated based on the percent recovery and purity of the recrystallized solid. The percent recovery is the percentage of the original compound that is recovered after recrystallization, and it is a measure of how efficient the recrystallization process was. A high percent recovery indicates that the recrystallization was successful in purifying the compound, while a low percent recovery may indicate that the solvent was not suitable for the compound or that the recrystallization conditions were not optimized.

The purity of the recrystallized solid is a measure of how free it is from impurities. The purity can be determined by comparing the melting point of the recrystallized solid to the known melting point of the pure compound. If the melting point of the recrystallized solid is close to the known melting point of the pure compound, then the recrystallization was successful in purifying the compound. If the melting point is lower or broader than the known melting point, then there may be impurities present in the recrystallized solid.

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Answer:

The strength of the forces holding the particles of a substance together determines its physical state at a given temperature. The stronger the forces the more energy required to overcome them and hence the particles remain in a fixed position and the substance is solid, while weaker forces may allow the particles to move freely making the substance a gas.

Explanation:

In the case of carbon dioxide (CO2), the particles are held together by weak van der Waals forces. These forces are not strong enough to keep the particles in a fixed position, so they are able to move freely and take on the properties of a gas at room temperature.

In the case of water (H2O), the particles are held together by hydrogen bonds. These bonds are stronger than the van der Waals forces in CO2, so the particles are not able to move as freely. As a result, water takes on the properties of a liquid at room temperature.

Salt (NaCl) is made up of positively charged sodium ions (Na+) and negatively charged chloride ions (Cl-). These ions are held together by strong ionic bonds, which keep the particles in a fixed position. As a result, salt takes on the properties of a solid at room temperature.

Answer:

l think gasoline and electric

I answered your question in the photo sent

Good luch

False. Table salt, or sodium chloride, forms from an ionic bond between sodium and chloride ions. This bond occurs as a result of the attraction between the positively charged sodium ion and the negatively charged chloride ion.

Hydrogen bonding, on the other hand, is a type of intermolecular bonding that occurs between molecules, not ions. It involves the attraction between a hydrogen atom bonded to a highly electronegative atom (such as oxygen or nitrogen) and a nearby electronegative atom in another molecule.

So, while hydrogen bonding may be involved in the formation of certain types of compounds, it is not involved in the formation of table salt.

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Answer:

commensalism

Explanation:

you had it right lol

Moss is a nonvascular plant, lacking a transport system and reproducing with spores.The correct option is C

Mosses are small, nonvascular plants that do not have true roots, stems, or leaves. Instead, they have thin thread-like structures called rhizoids that anchor the plant to the substrate and absorb water and nutrients from the surrounding environment.

Mosses reproduce using spores, which are small, single-celled structures that are dispersed by wind or water. Mosses do not produce flowers, seeds, or fruits like angiosperms or gymnosperms do. Instead they produce capsules that contain spores which are released into the environment when the capsule opens.

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