Are water molecules better able to completely solvate a cation that is smaller or larger, holding charge constant?
A. Smaller
B. Larger
C. Cation size should not make a difference

The radius, mass and volume of the nucleus are Radius ≈ 2.72 fm Mass ≈ 2.17 x 10^(-26) kg Volume ≈ 108.4 cubic femtometers (fm^3)

The atomic number (A) represents the number of protons in the nucleus of an atom. However, carbon usually has an atomic number of 6, not 13. Nonetheless, I'll provide calculations based on the given A = 13.

To calculate the radius of the nucleus, we can use the empirical formula:

Radius = r0 * A^(1/3)

Where r0 is a constant equal to approximately 1.2 femtometers (1.2 fm).

Radius = 1.2 fm * 13^(1/3)

Radius ≈ 2.72 fm

To calculate the mass of the nucleus, we need to consider the mass of individual protons and neutrons. The atomic number (A) represents the total number of protons and neutrons in the nucleus.

Mass = A * mass of one nucleon

The mass of one nucleon (proton or neutron) is approximately 1.67 x 10^(-27) kilograms.

Mass = 13 * (1.67 x 10^(-27) kg)

Mass ≈ 2.17 x 10^(-26) kg

To calculate the volume of the nucleus, we can use the formula for the volume of a sphere:

Volume = (4/3) * π * Radius^3

Volume = (4/3) * π * (2.72 fm)^3

Volume ≈ 108.4 cubic femtometers (fm^3)

Please note that the given value for the atomic number (A = 13) is unusual for carbon. Normally, carbon has an atomic number of 6.

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Answer:

they are bacteria

Explanation:

Answer:

Good bacteria keeps you healthy by supporting your immune function and controlling inflammation. Certain types of good bacteria can also: Help your body digest food. Keep bad bacteria from getting out of control and making you sick.

Explanation:

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Answer:

2, 15, 12, 6.

Explanation:

Answer:

Explanation:

Decomposition reaction, also known as analysis or dissociation, is a type of chemical reaction in which a compound breaks down into simpler substances or elements. In this reaction, a single reactant undergoes a chemical change and produces two or more products.

The decomposition reaction can be represented by the general equation:

AB → A + B

Where AB is the reactant, and A and B are the products. The reactant AB is usually a compound, and it breaks down into its constituent elements or simpler compounds.

There are different types of decomposition reactions, including:

Thermal decomposition: It occurs when a compound is heated, resulting in its decomposition into simpler substances. For example, the thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2):

CaCO3 → CaO + CO2

Electrolytic decomposition: It takes place when an electric current is passed through an electrolyte, causing it to break down into its component ions. For instance, the electrolysis of water (H2O) leads to the decomposition into hydrogen gas (H2) and oxygen gas (O2):

2H2O → 2H2 + O2

Photochemical decomposition: It occurs when a compound undergoes decomposition due to exposure to light energy. Chlorine gas (Cl2) can decompose into chlorine atoms (Cl) under the influence of light:

Cl2 → 2Cl

These are just a few examples of decomposition reactions. They are important in various chemical processes and are used in industries, laboratory experiments, and natural phenomena. By understanding and controlling decomposition reactions, scientists can gain insights into the behavior of different compounds and develop practical applications in fields such as chemistry, materials science, and environmental science.

Answer:

Explanation:

reaction in which a compound breaks down into simpler substances or elements

The molar volume is calculated dividing molar mass of compound by it's density.

Molar mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molar mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

The molecular mass and formula mass are used as synonym for the molar mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.

Molar masses of an element are given as relative atomic masses while that of compounds is the sum of relative atomic masses which are present in the compound.Molar mass gives the molecular weight of a substance required for making the solutions.

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Answer: So to figure out your energy balance you need to gather some important information.  That is, you eat more calories than your body uses. A kilojoule is a calorie) is a measure of energy in food. On average, people eat and drink around 8700 kilojoules a day.

Explanation: I hope that helped- Please mark me as brainliest!

The question is incomplete, the complete question is;

Some carbonated beverages are made by forcing carbon dioxide gas into a beverage solution. When a bottle

of one kind of carbonated beverage is first opened, the beverage has a pH value of 3.

After the beverage bottle is left open for several hours, the hydronium ion concentration in the beverage

solution decreases to 1/1000 of the original concentration. Determine the new pH of the beverage solution.

Answer:

6

Explanation:

Recall that

pH= -log[H3O^+]

Hence, [H^+] when the drink was first opened;

3 = -log[H^3O+]

[H^+] = Antilog(-3)

[H30^+] = 1 * 10^-3

Since [H3O^+] decreases to 1/1000 times its original value;

New [H3O^+] =  1 * 10^-3 * 1/1000 = 1 * 10^-6

Hence,

New pH = -log[1 * 10^-6]

New pH = 6

The solution obtained from the salt of hydrogen peroxide and ammonia is slightly basic.

The salt obtained from the combination of the weak acid hydrogen peroxide (H2O2) and the weak base ammonia (NH3) is ammonium peroxide (NH4)2O2. To determine the acidity or basicity of the resulting solution, we need to consider the nature of the ions present in the salt.

Ammonium (NH4+) is a weak acid, as it can donate a proton (H+) in water. Peroxide (O2^2-) is a strong base, as it can accept a proton (H+) from water. When ammonium peroxide dissolves in water, it dissociates into ammonium ions (NH4+) and peroxide ions (O2^2-).

The ammonium ion (NH4+) can slightly acidify the solution by donating protons (H+) to water, resulting in the formation of hydronium ions (H3O+). On the other hand, the peroxide ion (O2^2-) can slightly increase the pH by accepting protons (H+) from water, leading to the formation of hydroxide ions (OH^-).

Overall, the presence of ammonium peroxide in water will make the solution slightly basic. However, the exact pH of the solution would depend on the concentrations of the salt and other factors like temperature.

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Answer:

large particle composite

Covalent bonds are made by sharing of electrons to complete the octet or doublet of the atom to attain stability.

Covalent bond refers to the mutual sharing of one or more pairs of electrons between two atoms.

These electrons simultaneously attract the atomic nuclei of the two atoms participating in the covalent bond.

A covalent bond is formed only when the electronegativity difference of two atoms is too small so that an electron transfer to form ions will not occur.

Number of bonds for a neutral atom = (Number of electrons in the complete valence shell i.e. 2 or 8 electrons) - (Number of valence electrons of the atom)

for example:

Number of bonds for a neutral carbon = (Number of electrons in the complete valence shell i.e. 2 or 8 electrons) - (Number of valence electrons of the carbon)

which means,

Number of bonds for carbon atom = 8 - 4

Number of bonds for carbon atom = 4

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Answer: B) the forces in the solid hold the atoms tightly in place

Explanation:This is because there is no room for the atoms to move around much and because they are very close together which makes the phase a solid.

Answer:

The reaction will slow down because it is below the optimal temperature.

Explanation:

Enzymes catalyses a reaction and thus increases its rate. The rate of enzyme action is dependant on temperature by Arrhenius equation.  If the temperature reduces 10 degree celsius, then the rate enzyme action rate will also decreases accordingly.

An enzyme is a biological catalyst. They increases the rate of chemical reactions by attaining equilibrium fastly. This is achieved by decreasing the activation energies of the reactants.

There are various kinds of enzymes which are specific in their function and specific  to some substrates.  The temperature at which an enzyme shows its maximum activity is called optimum temperature.

The Arrhenius equation showing the relation between rate of reaction and temperature is:

\(K = Ae^{- \frac{E_{a}}{RT} }\)

Hence, as the temperature increases rate  also increase. The enzyme activity also. Therefore if the temperature reduces the enzyme activity reduces.

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Answer:

J/gm-C

Explanation:

J/gm-C   is one set of units for specific heat

Answer:

Por formación de burbujas.

Explicación:

La presencia de burbujas en la superficie de la bebida ayuda a determinar si la bebida tiene gas carbonatado o dióxido de carbono. El gas de dióxido de carbono no se puede mezclar con agua ni disolver en agua normalmente. Se puede agregar mediante alta presión al agua para que cuando se coloquen en condiciones normales, el dióxido de carbono se libere en forma de burbujas. No, el gas hidrógeno y el gas hidrógeno no podrían formar agua carbonatada porque ambos son átomos diferentes. El agua carbonatada tiene gas dióxido de carbono, no gas hidrógeno.

Nitration of chlorobenzene has a reaction rate that is slower than the nitration rate of benzene and gives primarily the meta-substituted product(s).

The nitration of chlorobenzene is slower compared to the nitration of benzene due to the presence of the electron-withdrawing chlorine atom. Chlorine's electron-withdrawing nature reduces the electron density on the benzene ring, making it less reactive towards electrophilic substitution reactions like nitration.

The nitration reaction involves the substitution of a nitro group (-NO2) for a hydrogen atom on the benzene ring. In the case of chlorobenzene, the chlorine atom directs the incoming nitro group to the meta position, resulting in the formation of the meta-substituted product as the major product.

This is because chlorine is a meta-directing group, meaning it favors substitution at the meta position relative to the chlorine atom. Overall, the nitration of chlorobenzene is slower and leads to the predominant formation of the meta-substituted product.

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The mass of oxygen is 128 g

Given that a sample of gas consists of oxygen (molecular mass 32.0 g/mol) and neon (20.0 g/mol). The sample has a mass of 226 g and contains a total of 8.00 moles of gas. We are required to find the mass of oxygen in the sample.

Let us suppose that the number of moles of oxygen is x. Now, we know that the total number of moles of gas is 8 moles. Therefore, the number of moles of neon is (8 - x).

Molar mass of oxygen = 32 g/mol

We can calculate the mass of oxygen from the number of moles of oxygen and molar mass of oxygen as follows:

Number of moles of oxygen × Molar mass of oxygen = Mass of oxygenx × 32 = Mass of oxygen

Let us find the mass of oxygen:

Mass of neon = Total mass of gas – Mass of oxygen

226 – Mass of oxygen = Mass of neon

226 – Mass of oxygen = (8 – x) × 20

Simplifying the equation:

226 – Mass of oxygen = 160 – 20x + x

226 – Mass of oxygen = 160 – 19x

Mass of oxygen = 66 – 19x

The total number of moles of gas is 8 moles

Hence, Number of moles of oxygen + Number of moles of neon = Total number of moles of gasx + (8 - x) = 8⇒ 8 = 8Therefore, the value of x = 4

We can calculate the mass of oxygen as follows:

Number of moles of oxygen × Molar mass of oxygen = Mass of oxygen

4 × 32 = 128 g

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To find the volume of oxygen produced at STP when 8.5g of NaNO3 is heated until no further gas is evolved, we need to use the given equation and stoichiometry of the reaction.The correct answer is (c) 4.48 dm³.

The balanced chemical equation is 2NaNO3 → 2NaNO2 + O2, which means that 2 moles of NaNO3 produce 1 mole of O2.First, we need to find the number of moles of NaNO3 present in 8.5g using its molar mass, which is 85 g/mol:

moles of NaNO3 = 8.5 g / 85 g/mol = 0.1 mol

Since 2 moles of NaNO3 produce 1 mole of O2, 0.1 mol of NaNO3 will produce 0.05 mol of O2.

At STP (standard temperature and pressure), 1 mole of gas occupies 22.4 dm³. Therefore, 0.05 mol of O2 will occupy:

0.05 mol x 22.4 dm³/mo = 1.12 dm³,Therefore, the volume of oxygen produced at STP when 8.5g of NaNO3 is heated until no further gas is evolved is 1.12 dm³.The correct answer is (c) 4.48 dm³.

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The rate of change of the concentration of Na₂C₂O4 is -0.0551 M/s.

To determine the rate of change of the concentration of sodium oxalate (Na₂C₂O4), we can use the rate equation:

Rate = (Δ[Na₂C₂O4]) / (Δt)

where Δ[Na₂C₂O4] represents the change in concentration of Na₂C₂O4 and Δt represents the change in time.

In this case, the initial concentration of Na₂C₂O4 is 1.34 M, and after 19.3 seconds, the concentration is 0.276 M.

Substituting the values into the rate equation, we have:

Rate = (0.276 M - 1.34 M) / (19.3 s - 0 s)

Rate = (-1.064 M) / (19.3 s)

Rate = -0.0551 M/s

Therefore, the rate of change of the concentration of Na₂C₂O4 is -0.0551 M/s.

The negative sign indicates that the concentration of Na₂C₂O4 is decreasing over time, as the reactant is being consumed in the reaction.

It's important to note that the rate of a reaction is influenced by various factors, such as the reaction mechanism, temperature, and presence of catalysts. The rate can be determined experimentally by measuring the change in concentration of a reactant or product over a specific time interval.

The given information allows us to calculate the rate of change for the specific reaction involving Na₂C₂O4. However, without additional information about the reaction, it is not possible to determine the exact nature or stoichiometry of the reaction, as well as any other reactants or products involved.

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A compound forms between cesium cation and carbonate anion Cs₂CO₃ is ionic compound. (B)

This creates an ion with a 1+ charge (Cs⁺). Carbonate is a polyatomic ion made up of carbon and oxygen atoms. It is a negative ion that has a charge of 2-.

The Cs+ ion reacts with the CO₃²⁻ ion to form an ionic bond. The Cs+ ion donates an electron to the CO₃²⁻ ion, resulting in the formation of the Cs₂CO₃ compound. Only ionic bonds exist in Cs₂CO₃.  Cs₂CO₃ is a purely ionic compound with ionic bonds between cesium ions and carbonate ions.

Because cesium is a metal, it tends to lose an electron, while the carbonate ion tends to gain two electrons.

Due to the exchange of electrons, ionic bonds are formed.Option c: The most stable form of a cesium ion has a charge of 1+:The most stable form of cesium ion has a charge of 1+. This is because cesium has only one valence electron. To get a full outer shell, it is preferable to lose this one valence electron.

So, when Cs+ loses an electron, it forms a cation with a 1+ charge.Option d: The compound is an ionic compound:Cesium carbonate is an inorganic compound that is ionic in nature.

so ,this compound only contains ionic bonds Cs⁺ (cesium cation) is a metal with a strong tendency to lose an electron. Cesium has only one valence electron, so it is easy to lose one electron and get a full outer shell. (B)

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Yes, there is a relationship between the height equivalent to a theoretical plate (HETP) and the identity of the distilland.

HETP is a measure of the efficiency of a distillation column, and it represents the height of a theoretical plate that would give the same separation as the real column. It is affected by several factors, including the type of packing material used in the column, the flow rate of the distillate, and the properties of the distilland, such as its boiling point, molecular weight, and volatility.

The identity of the distilland can significantly affect the HETP. For example, if the distilland is a mixture of compounds with different boiling points, the HETP may be higher for the components with lower boiling points as they are more difficult to separate. Similarly, if the distilland has a low molecular weight or is highly volatile, it may tend to vaporize more easily, leading to a lower HETP.

In the case of a stainless steel sponge packed column, the HETP may vary depending on the identity of the distilland, but it would also be influenced by the other factors mentioned above. The type of sponge used, the size of the pores, and the way it is packed can all affect the HETP.

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Answer:

An enzyme is known to catalyze the conversion of proteins to amino acids. Which of the following would be a correct designation for the enzyme?

c) . Hydrolase

the actual quantity of nitrogen, phosphorus, and potassium guaranteed to be applied to the maize field is 50 kg, 50 kg, and 25 kg, respectively.

For Nitrogen (N):

The percentage of nitrogen in the fertilizer is 20%. Therefore, the amount of nitrogen applied can be calculated as:

Nitrogen = (20/100) * 250 kg

Nitrogen = 0.2 * 250 kg

Nitrogen = 50 kg

For Phosphorus (P):

The percentage of phosphorus in the fertilizer is also 20%. Thus, the amount of phosphorus applied can be calculated as:

Phosphorus = (20/100) * 250 kg

Phosphorus = 0.2 * 250 kg

Phosphorus = 50 kg

For Potassium (K):

The percentage of potassium in the fertilizer is 10%. So, the amount of potassium applied can be determined as:

Potassium = (10/100) * 250 kg

Potassium = 0.1 * 250 kg

Potassium = 25 kg

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The mass percent of a molecule shows the amount each element contributes to the total molecular mass. So, acetamide is 40.7% Carbon, 23.7% Nitrogen, 27.1% Oxygen, and 8.5% Hydrogen.

Answer:

Complex permanent tissue is defined as a collection of structurally dissimilar cells performing a common function or set of functions.

its functions are:

1.help in the transportation of organic material, water, and minerals up and down the plants.

2.it helps in transportation of food from leaves to other parts of plants.

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The amount of a 1.5% ointment could you make with 43gm of hydrocortisone powder is 23.11 gm.

To determine the grams of a 1.5% ointment that can be made from 43gm of hydrocortisone powder, we need to use the concept of percent concentration. We are given:

We can use the following formula to solve this problem:

C₁V₁ = C₂V₂

where:

C₁ = concentration of a stock solution (hydrocortisone powder) = ?

V₁ = volume of stock solution = 43g

C₂ = concentration of the final solution (ointment) = 1.5% = 0.015 (decimal form)

V₂ = volume of the final solution (ointment) = m₂

First, we need to find the volume of the stock solution that would contain 43gm of hydrocortisone powder. The density of hydrocortisone powder is 1.24 g/mL. Hence, the volume of the stock solution is:

Volume of stock solution (V₁) = mass of powder / density

= 43 g / 1.24 g/mL = 34.67 mL

Now, we can use the formula to find the volume of the ointment that can be prepared:

C₁V₁ = C₂V₂

34.67 × 0.01 = 0.015V₂

V₂ = 34.67 × 0.01 / 0.015

= 23.11 gm

So, 43 gm of hydrocortisone powder can make 23.11 gm of a 1.5% ointment.

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The mass per cent of barium in the sample is approximately 51.9%. The correct answer is E.

To determine the mass per cent of barium in the sample, we can calculate the mass of barium present in the \(BaSO_4\) precipitate.

Given:

Mass of \(BaSO_4\) precipitate = 0.746 g

\(BaSO_4\) is composed of one barium ion (Ba2+) and one sulfate ion \((SO_{42^-})\). The molar mass of \(BaSO_4\) is 233.39 g/mol.

Using the molar ratio of barium to \(BaSO_4\) (1:1), we can calculate the moles of barium in the precipitate:

Moles of barium = Mass of \(BaSO_4\) / Molar mass of \(BaSO_4\)

               = 0.746 g / 233.39 g/mol

               ≈ 0.003193 mol

To calculate the mass per cent of barium in the sample, we divide the mass of barium by the initial mass of the sample and multiply by 100:

Mass per cent of barium = (Mass of barium / Initial mass of sample) × 100

                     = (0.003193 mol × 137.33 g/mol) / 0.846 g × 100

                     ≈ 51.9%

Therefore, the mass per cent of barium in the sample is approximately 51.9%. The correct answer is E.

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Answer:

The order of carbon that cannot undergo SN1 (Syl) reactions is primary carbon.

Explanation:

Primary carbon atoms are not able to undergo SN1 reactions due to their lower stability in forming carbocation intermediates compared to secondary and tertiary carbon atoms.

In this sort of haloalkane chemical reaction, the nucleophile attacks an electron-deficient site and substitutes the halogen or X there.

The electronegative halogen component in alkyl halides will cause electrons to withdraw from the bond and attract electrons towards it, polarizing the bond. As a result, a partial positive charge develops on the carbon atom, making it an electron deficient site.

Now imagine a nucleophile attacking the electron-deficient carbon atom. It will induce the halogen member to leave the complex as a halide ion. The halogen group will leave in the following order: I > Br > Cl > F.

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