How many grams of Gold (Il) Sulfate were reacted if 4. 6 x 1022 atoms of Gold were produced? 3 Ca + AU2(504)3 =->3 CaS04 +2 Au

A product line is a group of closely related products that are considered a unit because of marketing, technical, or end-use considerations. It is a specific group of products that are offered to the market by an organization. These products are sold by the same firm or a division of a firm and are made available to consumers.

The purpose of a product line is to offer consumers a range of choices that meet their specific needs or preferences. By grouping similar products together, organizations can better target their marketing efforts and develop specialized expertise in a particular area. For example, a clothing retailer may have a product line that includes casual wear, athletic wear, and formal wear.

Organizations can also use product lines to streamline their operations and reduce costs. By using common components or production processes across a product line, they can take advantage of economies of scale and reduce the costs associated with research and development, marketing, and distribution. In summary, a product line is a strategic approach to product development and marketing that allows organizations to offer a range of products that meet specific customer needs, while also optimizing their operations and reducing costs.

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Answer:

0.016M is the initial concentration of NaOH in the reaction mixture

Explanation:

The NaOH is diluted from 9.3mL to 9.3mL + 8.5mL = 17.8mL. That is a dilution of:

17.8mL / 9.3mL = 1.914 times

As the initial concentration of the NaOH solution is 0.031M and is diluted 1.914 times, the final concentration of the NaOH solution is:

0.031M / 1.914 =

0.016M is the initial concentration of NaOH in the reaction mixture

In electrolysis the flow of electrons occurs from Anode (Positively Charged electrode) towards Cathode (Negatively charged electrode).

Therefore Diagram A shows the correct flow of electron in an electrolysis

Chemical decomposition produced by passing an electric current through a Electrolytic (Salt) solution containing ions.

Anode is located at the left hand side of the electrolytic cell where as cathode is located at the right hand side of the electrolytic cell.  

Therefore, In the given diagrams, Diagram A follows the above mentioned pattern.

Hence, It shows the correct direction of electron flow in an electrolytic cell.

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Compared to other greenhouse gases, carbon dioxide is the most effective at trapping heat near the earth's surface.

What are greenhouse gases?

Greenhouse gases are gases that are present in the Earth's atmosphere that absorb and emit radiation within the thermal infrared range. This process is what allows the Earth's atmosphere to maintain a temperature that is conducive to life.

These gases have the potential to retain heat, contributing to the greenhouse effect. It is responsible for keeping our planet's temperature habitable for all living organisms.

What is carbon dioxide?

Carbon dioxide (\(CO_2\)) is a colorless gas that is naturally present in the Earth's atmosphere. It is an important component of the Earth's carbon cycle, which is a series of processes that govern the circulation of carbon between the atmosphere, land, and oceans.

Carbon dioxide is one of the most important greenhouse gases because of its ability to trap heat in the atmosphere. It can absorb longwave radiation from the Earth's surface and then re-emit it back, causing warming of the planet. Carbon dioxide is generated by various natural processes such as volcanic activity, animal respiration, and decomposition of organic matter, but it is also a byproduct of human activities such as burning fossil fuels and deforestation.

The answer is true compared to other greenhouse gases, carbon dioxide is the most effective at trapping heat near the earth's surface.

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The concentration of AB at 21 s is 0.526 M.

The data below show the concentration of AB versus time for the following reaction:

AB(g)→A(g)+B(g)Time (s)  [AB] (M)0  0.95050  0.459100  0.302150  0.225200  0.180250  0.149300  0.128350  0.112400  0.0994450  0.0894500  0.0812

Determine the value of the rate constant:

The reaction is a first-order reaction. The concentration of AB changes as follows:

[AB]t = [AB]0e^-ktln

([AB]t/[AB]0) = -ktln

(0.459/0.950) = -k(

0.693)k = 1.88 × 10^-3 s^-1

The rate constant value is 1.88 × 10^-3 s^-1.

Predict the concentration of AB at 21 s.

The formula for a first-order reaction is given by ln

([A]t/[A]0) = -ktln([AB]t

[AB]0) = -kt[AB]t = [AB]0 e^-kt

[AB]t = (0.950) e^-(1.88 × 10^-3)(21)[AB]t = 0.526 M.

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Cytochrome c is a small protein molecule located in the mitochondrial membrane and serves as an electron carrier in the electron transport chain.

Cytochrome c is a protein that plays an important role in the electron transport chain. It transfers electrons between Complex III and Complex IV in the electron transport chain, helping to create a proton gradient across the inner mitochondrial membrane.

This proton gradient is used to produce ATP, the energy currency of the cell. Without cytochrome c, the electron transport chain would not be able to function efficiently and produce the energy needed for cellular processes.

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Answer:

Diffusion is driven by differences in concentration. When chemical substances such as perfume are let loose in a room, their particles mix with the particles of air. Diffusion in gases is quick because the particles in a gas move quickly. It happens even faster in hot gases because the particles of gas move faster.

Answer:

76000

Explanation:

1*10^2 atm *760 mmHg = 76000

To prepare 0.194 M potassium acetate, add 2.379895 g of potassium acetate to a 125 mL volumetric flask and fill with water to the mark.

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution.

The following data were obtained from the question:

Molarity of potassium acetate = 0.194 M

Volume of solution = 125 mL

Mass of potassium acetate =?

Next, we shall convert 125 mL to L. This can be obtained as follow:

1000 mL = 1 L

Therefore,

125 mL = 0.125 L

Thus, 125 mL is equivalent to 0.125 L.

Next, we shall determine the number of moles of potassium acetate in the solution. This can be obtained as follow:

Molarity of potassium acetate = 0.194 M

Volume of solution = 0.125 L

Moles of potassium acetate =?

Molarity = \(\frac{mole}{Volume}\)

Cross multiply

Mole of potassium acetate = 0.194 M × 0.125

Mole of potassium acetate = 0.02425 mole

Finally, we shall determine the mass of potassium acetate

Molar mass of potassium acetate= 98.14 g/mol

Mass of potassium acetate =?

Mole = \(\frac{mass}{Molar mass}\)

Mass of potassium acetate =0.02425  × 98.14

Mass of potassium acetate = 2.379895 g

Thus, to prepare 0.194 M potassium acetate, add 2.379895 g of potassium acetate to a 125 mL volumetric flask and fill with water to the mark.

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Answer:

the first answer is correct don't forget you can use quizzlet app to

Answer: Only chemically.

Explanation: A compound is a pure substance composed of two or more different atoms chemically bonded to one another. That means that it can not be separated into its constituents by mechanical or physical means and only can be destroyed by chemical means.

The volume (in ml) of naoh is 0.026 L.

Concentration is the abundance of a constituent divided by way of the overall volume of an aggregate. several sorts of mathematical descriptions may be outstanding: mass concentration, molar concentration, variety concentration, and extent awareness.

Calculation:-

C₁ = 0.0961 M

mass = 0.1011 g

molar mass NaoH = 40

mole = 0.1011/40

        = 0.0023

V₁= mole / concentration

  = 0.0023 / 0.0961

  = 0.026 L

The concentration of a substance is the quantity of solute found in a given amount of solution. Concentrations are normally expressed in terms of molarity, defined because of the variety of moles of solute in 1 L of answer.

The Concentration of an answer is a measure of the quantity of solute that has been dissolved in a given amount of solvent or answer. A concentrated answer is one that has a rather huge quantity of dissolved solute.

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The size of micropipette that you would select to deliver 215 microliters would be a micropipette with a volume range of 200-1000 microliters.

What is a micropipette?

A micropipette is a laboratory instrument used to measure and dispense small volumes of liquid, typically in the range of microliters (µL) or nanoliters (nL). They are commonly used in chemistry, biology, and biochemistry experiments, as well as in clinical and industrial settings.

Micropipettes consist of a handle, a digital or manual volume adjustment mechanism, and a tip that is placed into the liquid to be dispensed. They work by creating a vacuum or positive pressure inside the tip, which draws or pushes the liquid out of the tip.

Micropipettes come in different volume ranges and it is important to select the right one to ensure accurate delivery of the desired volume. For example, a micropipette with a volume range of 2-10 microliters would not be suitable for delivering 215 microliters, while a micropipette with a volume range of 200-1000 microliters would be more appropriate.

It's also important to note that, even if the micropipette is able to deliver 215 microliters, you should always check the calibration of the micropipette before use, to make sure that it's delivering the correct volume.

Hence, a micropipette with a volume range of 200-1000 microliters is suitable to deliver 215 microliters.

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Explanation:

Moles of KCl in new solution = 0.325dm³ * (2.76mol/dm³) = 0.897mol.

Hence volume needed = 0.897mol / (3.95mol/dm³) = 0.227dm³ or 0.227L.

Answer:

html

Explanation:

im in web tech

The value of ΔS (change in entropy) for the reaction must be greater than ΔH' (change in enthalpy) divided by 298 K, as the reaction is thermodynamically favorable under standard conditions at 298 K.

The thermodynamic favorability of a reaction at a given temperature can be determined by the Gibbs free energy change (ΔG) using the equation ΔG = ΔH - TΔS, where ΔH is the change in enthalpy, T is the temperature in Kelvin, and ΔS is the change in entropy.

For a reaction to be thermodynamically favorable (spontaneous) at a given temperature, ΔG must be negative. At constant temperature and pressure, ΔG is related to ΔH and ΔS by the equation ΔG = ΔH - TΔS.

Since the reaction is thermodynamically favorable under standard conditions at 298 K, ΔG must be negative. At this temperature, the term -TΔS dominates the equation, indicating that ΔS must be positive. This is because a negative ΔS value would lead to a positive value for -TΔS, which would make the reaction non-spontaneous.

Therefore, ΔS must be greater than ΔH divided by 298 K, as ΔH contributes to ΔG with a negative sign, and ΔS must have a positive value to ensure thermodynamic favorability of the reaction. The answer is A) greater than ΔH'/298 K.

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The mass of the hydrogen is obtained as 0.302 g.

A hydrocarbon is a compound that contains only carbon an hydrogen. The amount of the carbon and the hydrogen can be found by combustion.

The mass of hydrogen can be obtained as follows;

Number of moles of hydrogen =2.7 g/18 g/mol * 2 = 0.302 moles

Now the mass of hydrogen is obtained from;

0.302 moles * 1 g/mol = 0.302 g

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Answer:

1. A mathematical equation that predicts how a physical phenomenon will behave - Scientific law

2. A predicted experimental outcome based on prior knowledge and experience - Hypothesis

3. The variable that is changed on purpose by the scientist - Independent variable

4. The variables that must be kept constant so as not to bias or influence the results - Control variable

5. Data that is descriptive rather than numerical -Qualitative data

6. Data that is numerical - Quantitative data

7. A well tested explanation for why a physical phenomenon occurs - Scientific theory

Explanation:

In the method of science in understanding and explaining phenomena in the universe, observations are made, explanations are put forward, experimented and tested, before conclusions are made. Explanations of some common terms in the scientific process is given below:

1. A scientific law is a mathematical equation that predicts how a physical phenomenon will behave.

2. A hypothesis is a predicted experimental outcome based on prior knowledge and experience.

3. A independent variable is the variable that is changed on purpose by the scientist.

4. A control variable is the variable that must be kept constant so as not to bias or influence the results.

5. Qualitative data is data that is descriptive rather than numerical.

6. Quantitative data is data that is numerical

7. A scientific theory is a well tested explanation for why a physical phenomenon occurs.

The molar solubility of BaSO4 in a 0.250-M solution of NaHSO4 is 2.06 × 10^-7 M.

To determine the molar solubility of BaSO4 in a 0.250-M solution of NaHSO4, we need to use the common ion effect. The addition of NaHSO4 to the solution will provide a common ion (HSO4-) that will affect the solubility of BaSO4.

The solubility product expression for BaSO4 is:

\(Ksp = [Ba2+][SO42-]\)

Let x be the molar solubility of BaSO4 in the presence of NaHSO4. Then, the concentration of Ba2+ and SO42- ions in the solution will also be x. The concentration of HSO4- ions in the solution will be 0.250 M (from the given information).

The reaction between HSO4- and BaSO4 can be represented as follows:

\(BaSO4(s) ⇌ Ba2+(aq) + SO42-(aq)\)

The equilibrium constant expression for this reaction can be written as:

\(K = [Ba2+][SO42-]/[BaSO4]\)

At equilibrium, the concentrations of Ba2+ and SO42- ions will be equal to x, and the concentration of BaSO4 will be (s - x), where s is the molar solubility of BaSO4 in pure water.

Substituting these values into the equilibrium constant expression, we get:

\(K = x2/(s - x)\)

The value of K can be calculated using the given solubility product constant (Ksp) for BaSO4:

\(Ksp = [Ba2+][SO42-] = s2K = s2/(s - x)\)

Now, we can use the ionization constant (Ka) for HSO4- to calculate the concentration of H+ ions in the solution. The dissociation reaction for HSO4- is:

\(HSO4- ⇌ H+ + SO42-\)

The equilibrium constant expression for this reaction is:

\(Ka = [H+][SO42-]/[HSO4-]\)

Since the initial concentration of HSO4- is 0.250 M, and the concentration of SO42- ions is x, the concentration of H+ ions can be calculated as:

\(Ka = [H+][x]/0.250[H+] = Ka*0.250/x\)

Now, we can use the fact that the solution is electroneutral to write:

\([H+] + [Ba2+] = [HSO4-]\)

Substituting the values we have calculated, we get:

\(Ka*0.250/x + x = 0.250\)

Solving for x, we get:

\(x = 2.06 × 10^-7 M\)

Therefore, the molar solubility in a 0.250-M solution of NaHSO4 is 2.06 × 10^-7 M.

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Answer:

165.3 cm^3

Explanation: hope this is correct!!

P1 * V1 / T1 = P2 * V2 / T2

P1 = 84.6 kPa

V1 = 215 cm³

T1 = 23.5°C = 23.5 + 273 K = 296.5 K

At STP:

P2 = 101.3 kPa

V2 = ?

T2 = 273 K

Answer:

1) Hacer una pregunta con respecto al fenómeno observado: ¿Por qué se apagó la estufa mientras se cocinaba la sopa?

2) Investigar sobre el tema: Los alimentos necesitan una fuente constante de calor para cocinarse. La estufa es la fuente de calor utilizada para la cocción de alimentos, existen dos modelos de estufas: (i) combustión de gas natural, (ii) inducción eléctrica.

Las estufas por combustión de gas natural requieren de un suministro de gas y una unidad de ignición, generalmente mantienen la llama una vez garantizado el suministro de gas natural. Son los modelos más económicos y comunes, aunque son las de menor eficiencia energética.

Las estufas por inducción eléctrica utilizan la energía eléctrica como suministro, la cual es transformada en calor por medio de inductores. Son más costosas que las estufas por combustión de gas natural, pero tienen mayor eficiencia energética.

Se debe determinar que tipo de estufa posee la madre de María. No obstante, una posible causa sea la interrupción del suministro, otra por daños en algún componente (gas natural o electricidad).

3) Elaborar una hipótesis: La estufa se apagó por una interrupción  en el suministro o por daños en el sistema.

4) Se realiza un experimento:

(i) Estufa por combustión de gas natural - Se abre el suministro de gas en otra hornilla, no sale gas.

(ii) Estufa por inducción eléctrica - Se enciende otra hornilla y no se activan los inductores.

5) Análisis de datos y obtención de conclusiones - Se analiza los datos y se encuentra que no existe suministro de gas/electricidad.

6) Compartir resultados - María concluye que la estufa se apagó por interrupción en el suministro.

Explanation:

El método científico consiste en el cumplimiento de los siguientes pasos:

1) Hacer una pregunta con respecto al fenómeno observado.

2) Investigar sobre el tema.

3) Elaborar una hipótesis.

4) Se prueba una hipótesis haciendo un experimento.

5) Analizar los datos y sacar una conclusión.

6) Compartir resultados.

A continuación, representamos cada paso:

1) Hacer una pregunta con respecto al fenómeno observado: ¿Por qué se apagó la estufa mientras se cocinaba la sopa?

2) Investigar sobre el tema: Los alimentos necesitan una fuente constante de calor para cocinarse. La estufa es la fuente de calor utilizada para la cocción de alimentos, existen dos modelos de estufas: (i) combustión de gas natural, (ii) inducción eléctrica.

Las estufas por combustión de gas natural requieren de un suministro de gas y una unidad de ignición, generalmente mantienen la llama una vez garantizado el suministro de gas natural. Son los modelos más económicos y comunes, aunque son las de menor eficiencia energética.

Las estufas por inducción eléctrica utilizan la energía eléctrica como suministro, la cual es transformada en calor por medio de inductores. Son más costosas que las estufas por combustión de gas natural, pero tienen mayor eficiencia energética.

Se debe determinar que tipo de estufa posee la madre de María. No obstante, una posible causa sea la interrupción del suministro, otra por daños en algún componente (gas natural o electricidad).

3) Elaborar una hipótesis: La estufa se apagó por una interrupción  en el suministro o por daños en el sistema.

4) Se realiza un experimento:

(i) Estufa por combustión de gas natural - Se abre el suministro de gas en otra hornilla, no sale gas.

(ii) Estufa por inducción eléctrica - Se enciende otra hornilla y no se activan los inductores.

5) Análisis de datos y obtención de conclusiones - Se analiza los datos y se encuentra que no existe suministro de gas/electricidad.

6) Compartir resultados - María concluye que la estufa se apagó por interrupción en el suministro.

The chemoheterotroph Proteus vulgaris is a rod-shaped bacterium that is classified with Enterobacteriaceae.

Proteus vulgaris is a Gram-negative bacterium that is rod-shaped and facultative anaerobic in nature. The bacterium is known for its natural capacity to swarm, which means it can easily move through solid or semi-solid surfaces, including media. It has been identified as a chemoheterotroph.

                                    Enterobacteriaceae is a family of Gram-negative, non-spore-forming bacilli. Proteus vulgaris is one of the members of this family, as well as some other genera such as Escherichia coli, Salmonella, Shigella, and many others. All members of the Enterobacteriaceae family are aerobic or facultatively anaerobic, and most are motile and have peritrichous flagella.

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The freezing point of the solution is -11.8 °C.

The boiling point of the solution is 103.31 °C.

To determine the freezing point of the solution, we can use the equation:

ΔTf = Kf * m

where:

ΔTf is the freezing point depression,

Kf is the cryoscopic constant (for water, Kf = 1.86 °C/m),

m is the molality of the solution (moles of solute per kilogram of solvent).

First, let's calculate the molality (m) of the solution:

Molar mass of ethylene glycol (C2H6O2):

C = 12.01 g/mol

H = 1.01 g/mol (x 6) = 6.06 g/mol

O = 16.00 g/mol (x 2) = 32.00 g/mol

Total molar mass = 12.01 g/mol + 6.06 g/mol + 32.00 g/mol = 50.07 g/mol

Number of moles of ethylene glycol (C2H6O2) = mass / molar mass

Number of moles = 30.8 g / 50.07 g/mol = 0.615 mol

Mass of water = volume x density = 96.6 mL x 1.00 g/mL = 96.6 g

Now, let's calculate the molality:

Molality (m) = moles of solute / mass of solvent (in kg)

Molality = 0.615 mol / 0.0966 kg = 6.36 mol/kg

Now we can calculate the freezing point depression (ΔTf):

ΔTf = Kf * m

ΔTf = 1.86 °C/m * 6.36 mol/kg = 11.8 °C

To find the freezing point of the solution, subtract the freezing point depression from the freezing point of pure water (0 °C):

Freezing point = 0 °C - 11.8 °C = -11.8 °C

To determine the boiling point of the solution, we can use the equation:

ΔTb = Kb * m

where:

ΔTb is the boiling point elevation,

Kb is the ebullioscopic constant (for water, Kb = 0.52 °C/m),

m is the molality of the solution (same value as calculated before: 6.36 mol/kg).

ΔTb = 0.52 °C/m * 6.36 mol/kg = 3.31 °C

To find the boiling point of the solution, add the boiling point elevation to the boiling point of pure water (100 °C):

Boiling point = 100 °C + 3.31 °C = 103.31 °C

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i think the first one is B Second once is D and thord is B

In our system mainly four states of matter are present and they are solid, liquid, gas and plasma. In melting solid changes into liquid and in sublimation solid changes into gas.

States are those phases which gives idea about the arrangement of constituent particles in it and also states the physical properties.

Hence all points are discussed above.

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fringing reef..........

Answer:

it's volume also decrease

Answer:

The new volume will be  

0.7 L

Explanation:

This is an illustration of Charles' law, some of the time called the temperature-volume law. It expresses that the volume of a gas is straightforwardly corresponding to the Kelvin temperature, while pressing factor and sum are held steady.  The condition is  V  1  T  1  =  V  2  T  2  , where  V  is volume and  T  is temperature in Kelvins.  Known  V  1  =  0.5 L  T  1  =  20  ∘  C  +  273.15  =  293 K  T  2  =  150  ∘  C  +  273.15  =  423 K  Obscure  V  2  Arrangement  Revise the condition to confine  V  2  . Substitute the known qualities into the condition and address.  V  2  =  V  1  T  2  T  1  V  2  =  (  0.5  L  ×  423  K  )  293  K  =  0.7 L  adjusted to one huge figure

Answer: genotype: Ee phenotype: two small eyes.

genotype: RR'  phenotype: pink eyes

genotype: GB phenotype: green and blue splotches

genotype: cc phenotype:  straight

genotype: Tt phenotype:  has tail

genotype: Ss phenotype: sharp teeth

genotype: FF' phenotype: three toes

genotype: ww phenotype: white

genotype: YY phenotype: pointy

genotype: nn phenotype: two ears

genotype: Ll phenotype: long

Explanation: hope this helps (the uppercase letters are dominant genes. the lowercase letter are recessive genes. for a recessive gene to show up in a phenotype you need 2 lower case letters such as cc or ss. for a dominant gene to show up in phenotype you need either 1 or 2 uppercase letters such as Cc or SS. Codominant genes present both colors in the phenotypes i.e. a brown and white cow. incomplete dominance is when neither gene is dominant so a mix of the 2 are present in the phenotype i.e. a pink rose. A regulatory gene controls the expression of a gene

Properties of elements within a period on the periodic table change in a predictable way from one side of the table to the other

From one side of the periodic table to the other, properties of elements within a period vary in a predictable manner. A horizontal row represents a period in the periodic table. The number of electron shells is the same for every atom in a row. Moving through a period causes elements to acquire electrons and protons and become less metallic. -Elements in the same period have the same number of electron shells.

As the atomic number rises, comparable features reoccur on a regular basis, which is reflected in this arrangement. From one side of the periodic table to the other, properties of elements within a blank shift in a predictable manner. those with comparable qualities are displayed in a column.

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Cosmic background radiation is Leftover radiation from the big bang.

What is Cosmic radiation?
When primary photons and particles from outside of the solar system interact with elements of the earth's atmosphere, cosmic radiation, an ionising radiation, is created. The sun's discharge of charged particles, also known as solar flares or "sun storms," is a secondary source of cosmic radiation. The environment in which we live naturally contains ionising radiation, which can be found in the soil, structures, food we eat, and even the bones in our bodies.

Nonionizing radiation, which also includes UV light, radio waves, as well as microwaves, is the other type. Natural radiation has been present in the environment where humans, animals, as well as plants have all evolved, and, with very few exceptions, it poses little danger to human health.

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