How does the acidity of a solution change with increasing concentration of hydrogen ions (H+)?

the widely-used radioactive isotope of carbon 14c has an atomic number of 6, and a mass number of 14.The carbon-14 isotope has 8 neutrons.

The number of neutrons in an atom can be calculated by subtracting the atomic number from the mass number. In this case, carbon-14 has an atomic number of 6, indicating 6 protons in the nucleus. The mass number of carbon-14 is 14, meaning the total number of protons and neutrons in the nucleus is 14. Therefore, the number of neutrons in carbon-14 is 14 - 6 = 8.
An isotope is a variation of an element that has the same number of protons in its nucleus, but a different number of neutrons. This means that isotopes of the same element have the same atomic number, but different mass numbers. Carbon-14 is a radioactive isotope that is commonly used in radiocarbon dating, which allows scientists to determine the age of organic materials. Since carbon-14 is unstable, it decays over time and transforms into nitrogen-14 by emitting a beta particle. The rate of decay is known, so by measuring the remain.

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Felting is a physical procedure. The mixture of the given solid and the liquid can be separated using filter paper in this process, for example, sand and water can be separated using filter paper.

Filtration is the process of removing solid particles from a liquid or gaseous fluid by using a filter medium that allows the fluid to pass through but retains the solid particles. The desired product could be either the clarified fluid or the solid particles removed from the fluid.

Separating sand from water is a physical process rather than a chemical one. Sand and water are a mixture that can be easily separated without the use of any chemicals. Sand can be filtered out of the water with a sieve and then dried to allow any remaining water to evaporate.

Thus,Water and sand are being separated by filtration.Felting  is used as a physical change.

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The molecular formula of a compound gives the actual number of atoms of various elements present in a molecule. The empirical formula is KClO₂.

The empirical formula of a compound is defined as the formula which gives the simplest whole number ratio of atoms of various elements present in one molecule of the compound.

Number of moles (n) = Given mass / Molar mass

'n' of 'K' = 5.71 / 39.09 = 0.1460 moles

'n' of 'Cl' = 5.18 / 35.45 = 0.1461 moles

'n' of 'O' = 5.18 / 15.99 = 0.3238 moles

To get simple whole number ratio:

K = 0.1460 / 0.1460 = 1

Cl = 0.1461 / 0.1460 = 1

O = 0.3238 / 0.1460 = 2

Thus the empirical formula is KClO₂.

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862.4 grams of carbon dioxide will be produced when 6.2 moles of propane, C₃H₈ is burned in oxygen

First, we will write a balanced equation

⇒ C₃H₈ + 5O₂ = 3CO₂ + 4H₂O

From the equation, we can see that 1 mole of propane takes 3 moles of Carbon dioxide in a ratio of 1:3

It's given that 6.2 moles of propane are burned, so using the ratio 1:3, we get 6.2 × 3 = 19.6 moles of Carbon dioxide

Now to get the mass of Carbon dioxide, we have to multiply 19.6 moles of carbon dioxide by its molar mass

Molar mass of Carbon dioxide = 1 × 12 + 2 × 16 = 44 grams/mole

So, the mass of carbon dioxide = 19.6 × 44 = 862.4 grams

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C6H13NH2 (1-hexylamine) would have the lowest vapor pressure.

This is because it has the largest molecular weight and strongest intermolecular forces among the given options. Intermolecular forces (such as hydrogen bonding or dipole-dipole interactions) affect the vapor pressure of a substance, with stronger forces leading to lower vapor pressure.Vapor pressure is the pressure exerted by the vapor of a liquid when the liquid and its vapor are in dynamic equilibrium in a closed container at a given temperature. It is a measure of the tendency of a substance to evaporate and become a gas. The vapor pressure of a substance is dependent on the temperature and the intermolecular forces between the molecules of the substance.

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The chemical name for ozone is O3, and it is a unique type of oxygen. We breathe O2, and O2 is essential to life on Earth.

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You are experimenting with blood samples and you place a drop of rbcs into a solution of 100 millimoles of CaCl2, there is no efect on RBCs.

The reason why the cell would shrink further in CaCl2 result is because it has a advanced van't Hoff factor i.e. total number of separated ionic species per solute patch( it is 2 for NaCl whereas it's 3 for CaCl2).

Nonionic solutes don't disconnect and will thus have a van't Hoff factor of 1)

Bibulous pressure( and other colligative parcels) are commensurable to van't Hoff factor. thus bibulous pressure in CaCl2 result will be3/2 times of that in an equimolar NaCl result.

Note that the ionic chemical eventuality isn't what drives osmosis; it's the discriminational attention of water( or any other detergent) that drives it.

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The dipole moment of gaseous AgCl is 11.5 D, and its ionic character is 78.1%. This means that 78.1% of the molecule’s bond is ionic and the remaining 21.9% is covalent.

A molecule’s bond is an attraction between atoms that allows the formation of chemical compounds. These bonds are formed when the electrons in the outermost shells of the atoms are shared or exchanged. There are two types of bonds, ionic and covalent. Ionic bonds form when the atoms of two different elements exchange electrons, while covalent bonds form when the atoms share electrons. This type of bonding is important in the structure of molecules, as it allows them to form stable compounds. Molecule bonds can be either single, double, or triple, depending on how many pairs of electrons are involved in the bond.

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Answer:

I Choosed:

A. They can end up as waste products that sometimes can’t be recycled.

B. They sometimes release toxins into the environment.

C. They use materials from Earth that are nonrenewable.

Explanation:

A. Synthetic polymers, such as plastic, can end up as waste in landfills, oceans, and other natural areas. This can cause a variety of environmental problems, as some types of plastic do not break down easily and can persist in the environment for decades or even centuries. This accumulation of waste can have negative impacts on wildlife, ecosystems, and human health.

B. Some synthetic polymers are made using harmful chemicals that can leach out and release toxins into the environment. These toxins can have negative impacts on wildlife, ecosystems, and human health. For example, some types of plastic contain chemicals such as bisphenol-A (BPA) that have been linked to hormone disruption and other health problems.

C. The production of synthetic polymers often requires the use of nonrenewable resources, such as petroleum and natural gas. These resources are finite and their extraction and processing can cause environmental damage, including air and water pollution and habitat destruction. The continued use of these nonrenewable resources can exacerbate environmental problems and contribute to climate change.

These are three ways that synthetic polymers can affect the environment, and it's important to consider the impacts of these materials in order to minimize their negative effects and promote sustainability.

We need 140 mL of 0.656 M HNO3 to dissolve 6.31 g of BaCO3.

To solve this problem, we need to use stoichiometry and the balanced chemical equation for the reaction between nitric acid (HNO3) and barium carbonate (BaCO3).

The balanced equation is:

2HNO3(aq) + BaCO3(s) → Ba(NO3)2(aq) + H2O(l) + CO2(g)

From this equation, we can see that 2 moles of HNO3 react with 1 mole of BaCO3. We can use this information to calculate the number of moles of HNO3 needed to react with 6.31 g of BaCO3.

First, we need to calculate the number of moles of BaCO3:

molar mass of BaCO3 = 137.33 g/mol

moles of BaCO3 = mass / molar mass = 6.31 g / 137.33 g/mol ≈ 0.046 mol

Since 2 moles of HNO3 react with 1 mole of BaCO3, we need 2 x 0.046 = 0.092 moles of HNO3.

Now we can use the molarity of the HNO3 solution to calculate the volume needed:

Molarity = moles of solute / volume of solution (in liters)

0.656 M = 0.092 mol / volume of HNO3 solution (in liters)

Solving for volume of HNO3 solution, we get:

volume of HNO3 solution = 0.092 mol / 0.656 M = 0.140 L = 140 mL

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Answer:

1.56x10^23 atoms of Mn

Explanation:

250 grams of braunite (Mn3SiO6) is:

  (250 g)/(288.91 g/mole) = 0.865 moles of Mn3SiO6

One mole of Mn3SiO6 would contain 3 moles of Mn, since it appears 3 times in the compound.  Breaking apart 1 mole of Mn3SiO6 into individual atoms of each element would procude 3 moles of Mn atoms (and 1 mole of Si and 6 moles of O atoms),

Since we have 0.865 moles of Mn3SiO6,

we should have:

    (0.865 moles of Mn3SiO6)*((3 moles of Mn)/(1 mole Mn3SiO6))

 this is equal to 2.596 moles of Mn atoms

Since 1 mole is 6.02x10^23 particles of anything, we can write:

(2.596 moles of Mn)*(6.02x10^23 particles Mn atoms/mole) =

          1.56x10^23 atoms of Mn

It is estimated that since the beginning of the Industrial Revolution, approximately 30% of the carbon dioxide (CO2) emitted by human activities has been absorbed by the oceans, leading to a process known as ocean acidification.

This absorption has helped to mitigate the effects of climate change, but it has also had negative impacts on marine ecosystems, including changes in ocean chemistry and increased acidity, which can harm marine organisms such as shellfish and coral. It is important to note that while the ocean has played an important role in mitigating climate change, continued emissions of carbon dioxide into the atmosphere will continue to have negative impacts on the environment and the climate system.

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When you add hydrochloric acid (HCl) to a solution of histidine (pH 12), the following chemical reaction takes place:

Histidine + H+ + Cl- --> Histidine-H+Cl-

The functional groups involved in this reaction are the carboxyl group (-COOH) and the amino group (-NH2) of histidine, which can react with H+ and Cl-, respectively, to form the histidine-H+Cl- salt.

A chemical reaction is a process that leads to the transformation of one set of chemical substances into another. During a chemical reaction, chemical bonds between atoms are broken and new bonds are formed, resulting in a rearrangement of atoms and the creation of new molecules or compounds.

Chemical reactions can be represented by chemical equations, which typically show the reactants on the left side of the equation and the products on the right side. The chemical equation also includes the stoichiometry of the reaction, which indicates the number of molecules or moles of each reactant and product involved.

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The angle between AB6 molecules is determined by the number of bonds between the atoms. AB6 molecules are molecules that are composed of six atoms in a ring. Each of the atoms is connected to two other atoms.

Atoms are the basic building blocks of all matter. They are the smallest particles of an element that still retain their chemical identity. Atoms are composed of a nucleus made of protons and neutrons, surrounded by electrons in shells. The number of protons in an atom determines the element it is, and the number of neutrons can vary to give different isotopes of the same element. Atoms can be combined by chemical bonds to form molecules and other compounds. The properties of an atom are determined by its electron configuration which can be altered by chemical reactions.

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Answer: Clarify your question please.

Explanation:

I'm sorry, but I need more context to determine the mean absolute deviation for "when any ice was present" and how to improve the men's deviation. Can you provide more details or clarify your question?

The ground state configuration of calcium (Ca) is 1s2 2s2 2p6 3s2 3p6 4s2. The ground state configuration is the lowest energy state that an atom or molecule can occupy.

It is the electron configuration of an atom or molecule in its most stable form, corresponding to the minimum energy state. The least energetic and most stable configuration is the ground state configuration. An excited state configuration is a higher energy configuration (it requires energy input to create an excited state). The electrons used for bonding are called valence electrons. The primary quantum number (n), the orbital (s, p, d, or f), and the total number of electrons are used to represent electron configurations. The total number of electrons is expressed as a superscript.

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You would require roughly 2.92 g of NaCl to make 100 mL of a 500 mM solution.

To make 100 mL of a 500 mM solution of NaCl, you need to compute the number of moles of NaCl you would have to add to the solution.

The concentration of the solution in moles per liter (M) can be determined by utilizing the equation:

C = n/V

where C = concentration (in M)

n = the number of moles of solute,

furthermore, V = the volume of the solution in liters.

In this way, to make 100 mL (0.100 L) of a 500 mM solution, you would have to add 0.100 L * 500 mM = 0.050 moles of NaCl to the solution.

At long last, by utilizing the molecular weight of NaCl we can find the number of grams required:

0.050 moles * 58.44 g/mole = 2.92 g

So you would require roughly 2.92 g of NaCl to make 100 mL of a 500 mM solution.

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Generally, percent Yield is defined as the actual yield divided by the theoretical yield multiplied with 100. There are lots of reasons why the actual yield of a chemical reaction may be less than the theoretical yield.

The following steps should be taken to increase the percent yield of a chemical reaction which are noted below.

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The reaction that represents a chemical change in which a compound is broken down into two simpler compounds is reaction a.

A decomposition reaction is a reaction in which a compound breaks down into two or more smaller compounds. It is opposed to a synthesis reaction in which two or more compounds combine to form a single compound.

Thus, for decomposition reactions: A ---> B + C

For synthesis reactions: A + B --> C

From reactions a to d shown in the illustration, only reaction a agrees with the features of a decomposition reaction.

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The final pressure of the two tanks combined is  c)6.1atm.So,correct option is c.

Boyle's law, likewise alluded to as the Boyle-Mariotte law, or Mariotte's regulation (particularly in France), is an exploratory gas regulation that portrays the connection among tension and volume of a bound gas. Boyle's law has been expressed as: Numerically, Boyle's regulation can be expressed as: or where P is the pressure of the gas, V is the volume of the gas, and k is a consistent. Boyle's law expresses that when the temperature of a given mass of restricted gas is constant, the result of its pressure and volume is likewise inversely proportional to each other.

According to boyle's law total pressure of any tank will be pressure exerted by it on a total volume of container.

In other words,pressure exerted by each tank =pressure value  × (total volume of container)

Therefore,

From first tank, pressure is  =7.2 × [15L/(15+8.3)]

=>pressure of first tank is = 7.2 ×(15/23.3)

=>pressure of first tank is =7.2×0.64377=4.635atm

Now,pressure of second tank is =4.1 × [8.3 / (8.3+15) ]

=>pressure of second tank is =(4.1) × [8.3 / 23.3]

=>pressure of second tank is =4.1×0.356=1.46atm

Therefore,total pressure exerted by two tanks combines=1.46atm + 4.635atm=6.095atm=6.1atm.

Hence,option c is correct.

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Answer:

yes

Explanation:hydrogen two non-metals bonded together that makes a covalent or molecular compound

Depending on the molecule's chemical composition, they can be purines or pyrimidines.

Nucleotide building blocks are the monomers (single molecules) that make up nucleic acids, such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). They are classified as either purines or pyrimidines, depending on the chemical structure of the molecule.

Purines: Adenine (A), Guanine (G)

Pyrimidines: Cytosine (C), Thymine (T), Uracil (U)

Sorted by name: Adenine (A), Cytosine (C), Guanine (G), Thymine (T), Uracil (U)

Sorted by classification: Purines: Adenine (A), Guanine (G) Pyrimidines: Cytosine (C), Thymine (T), Uracil (U).A nucleotide is the basic structural unit of nucleic acids such as DNA and RNA.

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complete question:sort these nucleotide building blocks by their name or classification. from below image

From the observations we can conclude that the substance contains  protein and starch.

The different observations are given below:

Biuret - Violet (Violet color represents +ve for proteins)

Iodine - Black (Black color represents +ve for starch)

Benedicts - no change ( No change in color represent -ve due to absent of reducing sugar)

Sudan VI- (-ve  as there is not lipid)

So, these results strongly suggest that substance is having protein and starch and showing positive test for these macromolecules in the sample as violet color for in biuret test and black while using iodine.

Therefore, assuming all the observations we can conclude that the substance contains protein and starch.

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The concentration of the solution in parts per million (ppm) is 450. The correct answer is (1) 450 ppm.

1 ppm (parts per million) is a unit of measurement used to express the concentration of a substance in a solution or mixture. It indicates the ratio of the number of units of a particular substance to the total number of units in the mixture, with each unit typically being a single molecule or ion.

To calculate the concentration of a solution in parts per million (ppm), we use the following formula:

Concentration (ppm) = (mass of solute / mass of solution) x 10^6

In this case, the mass of solute (KNO3) is 0.45 gram and the mass of solution is 1000 grams (1 liter of water). Putting up these values in the formula, we get:

Concentration (ppm) = (0.45 / 1000) x 10^6 Concentration (ppm) = 450

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To prepare 100 mL of a 0.200 M acetate buffer, pH 5.00, you will need acetic acid, 3M HCl, 3 M NaOH, and a pH meter.

1. Calculate the amounts of acetic acid and sodium acetate needed to make the buffer.

To prepare 0.200 M acetate buffer, you will need 0.2 moles of acetic acid and 0.2 moles of sodium acetate.

Moles of acetic acid = 0.2 moles

Moles of sodium acetate = 0.2 moles

2. Calculate the volume of acetic acid and sodium acetate needed to make the buffer.

Volume of acetic acid = [tex]0.2 moles *(17.30 mL/mole) = 3.46 mL[/tex]

Volume of sodium acetate =[tex]0.2 moles * (22.06 mL/mole) = 4.41 mL[/tex]

3. Calculate the amount of HCl and NaOH needed to adjust the pH to 5.00.

First, the pKa of acetic acid needs to be calculated.

pKa of acetic acid = 4.76

Now, the amount of HCl and NaOH needed to adjust the pH of the buffer can be calculated using the Henderson-Hasselbalch equation.

Henderson-Hasselbalch equation:

pH =[tex]pKa + log\frac{[base]}{[acid]}[/tex]

Rearranging the equation to calculate [base],

[base] =[tex][acid] * 10^{(pH - pKa) }[/tex]

[NaOH] =[tex][HCl] * 10^{(pH - pKa) }[/tex]

[HCl] =[tex][NaOH] * 10^{(pKa - pH) }[/tex]

[HCl] =[tex]0.2 M * 10^{(4.76 - 5.00) }[/tex]

[HCl] = [tex]0.162 M[/tex]

[NaOH] =[tex]0.2 M* 10^{(5.00 - 4.76) }[/tex]

[NaOH] = [tex]0.238 M[/tex]

4. Calculate the volume of HCl and NaOH needed to adjust the pH to 5.00.

Volume of HCl = [tex]0.162 M * (17.30 mL/mole) = 2.79 mL[/tex]

Volume of NaOH = [tex]0.238 M *(22.06 mL/mole) = 5.25 mL[/tex]

5. Prepare the buffer.

To prepare the buffer, add 3.46 mL of acetic acid, 4.41 mL of sodium acetate, 2.79 mL of HCl, and 5.25 mL of NaOH to a volumetric flask, and make up to 100 mL with distilled water.

6. Measure the pH of the buffer and adjust as necessary.

Using a pH meter, measure the pH of the buffer and adjust with additional HCl or NaOH as necessary to reach a pH of 5.00.

Once the desired pH is reached, the buffer is ready to use.

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complete question:How do you prepare 100 mL of 0.200 M acetate buffer, pH 5.00, starting with pure liquid acetic acid and solutions containing 3 M HCl and 3 M NaOH furthermore 15 points?

The empirical formula for malic acid is HO₂CCH=CHCOH₂,if it contains 35.821% C, 4.478% H, and 59.701% O by mass.

In science, the empirical formula of a synthetic compound is the easiest entire number proportion of particles present in a compound.[1] A straightforward illustration of this idea is that the empirical formula  of sulfur monoxide, or somewhere in the vicinity, would essentially be Thus, just like the observational recipe of disulfur dioxide, S₂O₂. Accordingly, sulfur monoxide and disulfur dioxide, the two mixtures of sulfur and oxygen, have a similar experimental recipe. Nonetheless, their sub-atomic equations, which express the quantity of particles in every atom of a synthetic compound, are not something similar.

Malic acid or cis-butenedioic acid is a natural compound that is a dicarboxylic corrosive, a particle with two carboxyl gatherings. Its compound equation is HO₂CCH=CHCOH₂. Maleic acid is the cis-isomer of butenedioic corrosive, though fumaric acid is the trans-isomer. It is for the most part utilized as a forerunner to fumaric corrosive, and comparative with its parent maleic anhydride, maleic corrosive has not many applications.

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Tin being an example of an element that has a great number of naturally occurring isotopes, it has 70 neutrons in total.

Tin-120 is an isotope of tin with an atomic number of 50, which means it has 50 protons in its nucleus. To find the number of neutrons in tin-120, we need to look at its atomic mass, which is typically given in atomic mass units (amu).

The atomic mass of tin-120 is approximately 120 amu. Since the atomic mass of an atom is the sum of its protons and neutrons, we can calculate the number of neutrons in tin-120 by subtracting the atomic number (50) from the atomic mass (120):

number of neutrons = atomic mass - atomic number

= 120 - 50

= 70

Therefore, tin-120 has 70 neutrons.

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The balanced equation for the reaction of zinc with hydrochloric acid is:

Zn (s) + 2 HCl (aq) -> ZnCl2 (aq) + H2 (g)

A balanced equation is a chemical equation in which the number of atoms of each element is equal on both sides of the equation. This means that the equation is in agreement with the law of conservation of matter, which states that matter cannot be created or destroyed, only transformed from one form to another.

Balancing an equation involves adjusting the coefficients in front of the chemical formulas so that the number of atoms of each element is the same on both sides of the equation.

Zn (s) + 2 HCl (aq) -> ZnCl2 (aq) + H2 (g)

In this reaction, zinc (Zn) reacts with hydrochloric acid (HCl) to form zinc chloride (ZnCl2) and hydrogen gas (H2).

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To dilute the triamcinolone injectable suspension from 10mg/ml to 0.125 mg/ml, we need to dilute it 80 times (since 10 ÷ 0.125 = 80). This means that we need to add 1 part of the 10mg/ml suspension to 79 parts of distilled water.

To calculate how much of each we need, we can use the following formula:

C1V1 = C2V2

where C1 is the initial concentration (10mg/ml), V1 is the initial volume (unknown), C2 is the final concentration (0.125mg/ml), and V2 is the final volume (480ml).

First, we can solve for V1:

C1V1 = C2V2

10mg/ml x V1 = 0.125mg/ml x 480ml

V1 = (0.125mg/ml x 480ml) / 10mg/ml

V1 = 6ml

So we need 6ml of the 10mg/ml triamcinolone injectable suspension.

Next, we can calculate how much distilled water we need to add:

Total volume - volume of triamcinolone suspension = volume of distilled water

480ml - 6ml = 474ml

Therefore, we need to add 6ml of the 10mg/ml triamcinolone injectable suspension and 474ml of distilled water to make 480ml of the final product with a concentration of 0.125mg/ml.

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[tex]13.86 seconds[/tex]  required for 65% of the initial quantity of reactant to be consumed

A first order reaction's rate constant is provided by:

rate = k[A]

A reactant is a substance that participates in a chemical reaction and is changed into a product.

where [A] is the concentration of the reactant.

In this case, the rate constant is given as 0.0450 s-1.

To calculate the time required for 65% of the initial quantity of reactant to be consumed, we can use the following equation:

[tex]t = (\frac{1}{k})[ln(1 - 0.65)][/tex]

Substituting the values, we get:

[tex]t = (\frac{1}{0.0450 s^{-1}})[ln(1 - 0.65)] \\\\t= 13.86 s[/tex]

Therefore, it will take [tex]13.86 seconds[/tex] for 65% of the reactant's original volume to be consumed.

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