[12] in your own words, explain the chemical basis of how the buffer resists ph changes when the base is added.

Answers

Answer 1

The chemical basis of the buffer resists pH changes when the base is added is the OH- ions from the strong base react with the weak acid so the pH change.

A buffer solution is made up of a weak acid and its conjugate base, or a weak base and its conjugate acid. When a strong base is added to the buffer solution, the OH- ions from the strong base react with the weak acid in the buffer, forming water and the conjugate base. This reaction decreases the concentration of H+ ions in the solution, preventing a significant change in pH.

Similarly, when a strong acid is added to the buffer solution, the H+ ions from the strong acid react with the conjugate base in the buffer, forming the weak acid and decreasing the concentration of OH- ions in the solution. The buffer solution is able to resist changes in pH because the weak acid and its conjugate base can readily convert back and forth between each other, maintaining the equilibrium of the solution. This chemical reaction is known as the acid-base equilibrium, and it allows the buffer solution to effectively resist changes in pH when a base is added. So therefore the buffer resists pH changes when the base is added is the OH- ions from the strong base react with the weak acid so the pH change.

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Related Questions

Think about a wooden chair and a balloon. What do these two objects always have in common?


Both are made of atoms.


Both have the same physical properties.


Both are made of the same kind of atom.

Both are made of the same number of atoms.

Answers

Answer:

both are made of atoms. .

Answer:

Both are made of atoms.

Explanation:

What are some downsides to fossil fuels? (Select all that apply.) pls help im timed

They are expensive to extract compared to other forms of energy.

They release large amounts of carbon dioxide when burned.

They do not replenish themselves.

They are in a limited supply.

Answers

Answer:

B, C and D

Explanation:

Fossil fuels include coal, petroleum, natural gas, oil shales, bitumens, tar sands, and heavy oils. When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air.

Although fossil fuels are continually formed by natural processes, they are classified as non-renewable resources because they take millions of years to form.

fossil fuels, are called nonrenewable, which means they have a limited supply and are not continuously being made or they are made very slowly

Lost when 18. 0 g of ethanol, c2h5oh , cools from 63. 5 ∘c to -47. 0 ∘c

Answers

The heat lost by 18.0 g of ethanol during cooling from 63.5 °C to -47.0 °C is approximately -4,193.76 J (or 4.19 kJ, rounded to two decimal places).

The temperature change and the mass of the substance are given. To calculate the heat lost by ethanol during cooling, we can use the formula:

q = mcΔT

where:

q = heat lost or gained (in joules)

m = mass of the substance (in grams)

c = specific heat capacity of the substance (in J/g·°C)

ΔT = change in temperature (in °C)

First, we need to determine the specific heat capacity of ethanol. The specific heat capacity of ethanol is approximately 2.44 J/g·°C.

Next, let's calculate the heat lost by the given mass of ethanol during cooling.

Step 1: Convert the mass of ethanol to grams.

The given mass is already in grams, so no conversion is needed.

Step 2: Calculate the change in temperature.

ΔT = final temperature - initial temperature

ΔT = (-47.0 °C) - (63.5 °C)

ΔT = -110.5 °C

Step 3: Plug the values into the formula and solve for q.

q = (18.0 g) × (2.44 J/g·°C) × (-110.5 °C)

q ≈ -4,193.76 J

Therefore, the heat lost by 18.0 g of ethanol during cooling from 63.5 °C to -47.0 °C is approximately -4,193.76 J (or 4.19 kJ, rounded to two decimal places). Note that the negative sign indicates heat loss.

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Aluminum has a specific heat capacity of 0.902 J/g °C. How much energy is released when 1.0 kg
of aluminum cools from 35 °C to 20 °C?

Answers

Answer:

The energy released is 13.53j

Explanation:

Q = Mc∆temp.

Q = energy

M = mass

c = specific heat capacity

∆temp. = change in temperature

Q = 1 x 0.902 x (35 - 20)

Q = 0.902 x 15 = 13.53j

Aluminum has a specific heat capacity of 0.902 J/g °C, the amount of energy that is released when 1.0 kg of aluminum cools from 35°C to 20°C is 13,530 J.

How do we calculate the released heat?

The amount of heat that is released during any reaction will be calculated as:

Q = mcΔT, where

m = mass of aluminum = 1kg = 1000g

c = specific heat of aluminum = 0.902 J/g.°C

ΔT = change in temperature = 35 - 20 = 15 °C

On putting values we get

Q = 1000 × 0.902 × 15 = 13,530 J

Hence released heat is 13,530 J.

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I need help with my project!!!!!


Unit Essential Question: How can we harness Earth's energy for our community's needs?

Problem:
We need environmentally-friendly forms of energy.
Wind and solar farms take up lots of space/habitats, and
impact the animals around them.
Challenge
There's a new parcel of land that is being developed in the Antelope
Valley and three companies are bidding on the contract. One company will use solar energy to power the
development, one company plans to use wind power, and your company is using geothermal energy to
power it. Many people don't want to see solar and wind farms for aesthetic reasons and for harm to
natural habitats. So, there's been a growing demand for geothermal energy.
You will be developing a parcel of land with a building that harnesses
geothermal energy from the ground below. You will make a plan and
present it to the class. Create a slides presentation.

Project Criteria for Success:
To prepare for your presentation, discuss the components below. In your presentation, please include the
following:
• A description of your building or development - including what type of building you used (i.e.
school, housing, hospital, church, ranch/farm, park, etc...).
A model (i.e. diagram, physical, or simulation) that describes the forms of energy (i.e. kinetic and
potential energy) involved in your building
how energy (i.e. thermal energy) is transferred in your building
A discussion about the benefits and drawbacks of using geothermal energy in the Antelope Valley
as compared to solar and wind as an energy source.

Answers

Answer:

Use a school

Explanation:

You could use a building like a school then you could use the lights as thermal energy then you make up an example of potential energy and when is this assignment due?

HELP . Read the following graduated cylinder.


Use this media to help you complete the question.


22.0 mL

22 mL

23.0 mL

22.5 mL

Answers

The volume of the liquid from the graduated cylinder is 22.5 mL

The last option (22.5 mL) is the correct option

The question seems to be incomplete

The image that completes the question is shown in the attachment below.

From the image, we observe that the liquid meniscus is between the 20 mL and 25 mL marks. That means the volume will lie in this range.

NOTE: The meniscus of a liquid is the upward or downward curve seen at the top of a liquid in a container.

The type of curve shown in the image is a concave meniscus and the volume of the liquid is read from the bottom of the curve.

To read the value from the graduated cylinder, we will first determine the difference between two consecutive lines. Between the 20 mL and 25 mL mark (two thick lines), we have 5 spaces separated by thin lines.

The measure between two consecutive lines is the difference between two thick lines divided by number of spaces between them

∴ The measure between two consecutive lines = (25mL - 20mL) ÷ 5

The measure between two consecutive lines = 5mL ÷ 5 = 1 mL

Now, to read the position of the liquid,

Starting from the 20 mL mark, the liquid exceeds two more lines + half way to the next line ( that is 2mL + 0.5 mL)

∴ The position of the liquid is 20 mL + 2mL + 0.5 mL = 22.5 mL

Hence, the volume of the liquid from the graduated cylinder is 22.5 mL

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HELP . Read the following graduated cylinder.Use this media to help you complete the question.22.0 mL22

Answer:

The answer is  22.5 mL

Explanation:

I hope this helps you :)

Draw five possible isomers corresponding to the formula C7H16. Please name each isomer.

Answers

Isomers are compounds that have the same molecular formula, meaning they contain the same types and numbers of atoms but differ in their structural arrangement or spatial orientation.

The five possible isomers corresponding to the formula C7H16, along with their names:

1.  Heptane:

    CH3-CH2-CH2-CH2-CH2-CH2-CH3

2. 2-Methylhexane:

    CH3-CH2-CH(CH3)-CH2-CH2-CH3

3. 3-Methylhexane:

    CH3-CH2-CH2-CH(CH3)-CH2-CH3

4. 2,2-Dimethylpentane:

    CH3-C(CH3)2-CH2-CH2-CH3

5. 2,3-Dimethylpentane:

    CH3-CH(CH3)-CH(CH3)-CH2-CH3

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I don’t even know what this is. Please help

I dont even know what this is. Please help

Answers

Row one= Chloride
FeCl2
FeCl3
GaCl3
AgCl
PbCl4

Air is made up of what percentage of each type of molecule?

Answers

Answer:

78% nitrogen, 21% oxygen and about 1 percent argon

Explanation:

Write the formula for the conjugate acid of each of the following: [4]
(i) HSO3–,
(ii) F–,
(iii) PO43–,
(iv) CO.

Answers

The formula for the conjugate acid of each of the given compounds.

(i) The conjugate acid of HSO3– is H2SO3.
To form a conjugate acid, a proton (H+) is added to the base (SO32–) to make it an acid (HSO3–), so to get the conjugate acid, we remove that added proton and get back to the original compound, H2SO3.

(ii) The conjugate acid of F– is HF.
When a proton (H+) is added to the base (F–), it becomes an acid (HF), so to form the conjugate acid, we remove that added proton and get back to the original compound, F–.

(iii) The conjugate acid of PO43– is HPO42–.
To form a conjugate acid, a proton (H+) is added to the base (PO43–) to make it an acid (HPO42–), so to get the conjugate acid, we remove that added proton and get back to the original compound, PO43–.

(iv) CO cannot act as a base and does not have a conjugate acid.
CO is a neutral molecule and does not have any basic properties, so it cannot accept a proton to form an acid. Therefore, it does not have a conjugate acid.

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The mechanical processes that breaks rocks physically into pieces

Answers

Explanation:

Weathering is the physical and chemical breaking of rocks into smaller pieces.

A trapezoid has an area of 20 cm2 and a height z cm. The lengths of the parallel sides are (2z + 3) cm and (6z – 1) cm. Find the height, z, of the trapezoid. In your final answer, include all of the formulas and calculations necessary

Answers

Answer:

Height z= 2.115 cm

Explanation:

The formula for area of a trapezoid is ;

A=1/2(a+b)h where A is area, a and b are the lengths of parallel sides and h is the height of the trapezoid.

Given in the question;

A= 20 cm²

a=( 2z + 3 ) cm

b= (6z-1) cm

h= z =? unknown

Substitute in the formula as;

A=1/2(a+b)h

20=1/2(2z+3+6z-1)z -----------multiply both sides of the equation by 2

40= (2z+3+6z-1)z  -----------collect like terms as

40 =(2z+6z+3-1)z

40=(8z+2)z -----open brackets as

40=8z²+2z --------- form a quadratic equation

8z²+2z-40 = 0 -----solve the quadratic equation to find value of z

z²+0.25z-5=0

z= 2.115

A trapezoid has an area of 20 cm2 and a height z cm. The lengths of the parallel sides are (2z + 3) cm

molecules move in random directions when heated in a heat engine, and because of the lack of uniformity in direction of molecular movement, true or false

Answers

The statement "molecules move in random directions when heated in a heat engine, and because of the lack of uniformity in the direction of molecular movement" is true.

When a heat engine is heated, molecules absorb heat energy and their kinetic energy increases. The kinetic energy of molecules causes them to move around. However, this movement is not uniform, and the molecules move in random directions.

A heat engine is a device that converts thermal energy into mechanical energy. Heat engines operate on the principle of thermodynamics.

They work by taking in thermal energy from a high-temperature reservoir, converting some of it into mechanical energy, and then releasing the remaining thermal energy to a low-temperature reservoir.The internal combustion engine in a car, the steam engine in an old locomotive, and the turbine in a power plant are all examples of heat engines. They all convert heat energy into mechanical energy to perform work.

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Given that the pka of acetic acid is 4.8, what would be the likely result of adding 1 mL of 0.1 M HCl to a 0.1 Macetate buffer at a pH of 5.0?
A. The pH would drop slightly.
B. The pH would increase significantly.
C. The pH would drop significantly.
D. The pH would increase slightly.

Answers

The pKa of acetic acid is 4.8, the result of adding 1 mL of 0.1 M HCl to a 0.1 M acetate buffer at a pH of 5.0 is:

C. The pH would drop significantly.

Acetic acid (CH₃COOH) is a weak acid that partially dissociates in water, releasing hydrogen ions (H⁺). In an acetate buffer solution, acetic acid and its conjugate base, acetate (CH₃COO⁻), are present in equilibrium:

CH₃COOH ⇌ H⁺ + CH₃COO⁻

The equilibrium is governed by the acid dissociation constant, represented as Ka. The pKa of acetic acid is given as 4.8. The pKa is the negative logarithm of the Ka value.

When a strong acid, such as HCl, is added to the acetate buffer solution, it introduces a large concentration of additional H⁺ ions. This disturbs the equilibrium between acetic acid and acetate, shifting it towards the formation of more undissociated acetic acid. Consequently, the concentration of H⁺ ions increases, causing a significant drop in pH.

Since the initial pH of the acetate buffer is 5.0, which is higher than the pKa of acetic acid (4.8), the buffer is in a partially deprotonated state. Adding HCl, a strong acid, disrupts the balance between the acid and its conjugate base, resulting in a more acidic solution and a significant decrease in pH.

Therefore, option C, "The pH would drop significantly," is the likely result of adding 1 mL of 0.1 M HCl to the 0.1 M acetate buffer at a pH of 5.0.

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What is the purpose of the one balloon larger in size than the other balloons?.

Answers

The purpose of having one balloon larger in size than the other balloons is to show the effect of increasing the size of the balloon on the motion produced by the balloon. The size of the balloon affects the amount of air that can be stored inside it.

As a result, the amount of air that can be expelled out of the balloon with each burst increases as the size of the balloon increases. When the balloons are released simultaneously, the smaller balloons will move faster than the larger balloon. The reason behind this is due to the mass of the balloons. The larger balloon has more mass than the smaller balloons.

As a result, the larger balloon will require more force to move in the same distance as the smaller balloons. Because the amount of air expelled from the balloon is equal to the force, the larger balloon will take longer to move the same distance as the smaller balloons.

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1. Which term identifies a factor that will shift a
chemical equilibrium?
A) atomic radius
B) catalyst
C) decay mode
D) temperature

Answers

Answer:

D) Temperature,

Explanation:

What is the mass of 3.00 moles of carbon

Answers

Answer:

36 grams as 1 mole is 12 grams

Answer:

tbh idk cause I will love to answer your question but ehh

design a synthesis of 2-hexanone from compounds containing four carbons or fewer.

Answers

One possible synthesis of 2-hexanone from compounds containing four carbons or fewer could start with the compound ethylacetoacetate (EAA), which has three carbons.

EAA can be reacted with ethyl iodide in the presence of a strong base, such as sodium hydride, to yield the compound ethyl 3-oxobutanoate. This compound has four carbons and can be further reacted with a Grignard reagent, such as methylmagnesium bromide, to form the intermediate compound 3-hexanol. This compound can then be oxidized with a strong oxidizing agent, such as potassium permanganate, to form 2-hexanone, which has six carbons. The final product can be purified using distillation or other separation techniques. This synthesis involves multiple steps and requires careful handling of reactive chemicals, but can yield high purity 2-hexanone from simple starting materials.
To synthesize 2-hexanone from compounds containing four carbons or fewer, we can use a three-step process. First, perform a Grignard reaction between ethyl magnesium bromide (CH3CH2MgBr) and butanone (CH3CH2COCH3) to form a tertiary alcohol. Next, conduct an oxidation of the tertiary alcohol using a strong oxidizing agent such as chromium trioxide (CrO3) to create a ketone, 2-hexanone (CH3CH2CH2COCH2CH3). This method efficiently combines smaller carbon compounds to produce the desired target molecule, 2-hexanone, with the given restrictions on starting materials.

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Which of the following ions could exist in either the high-spin or low-spin state in an octahedral complex?
A. Sc3+
B. Ni2+
C. Mn2+
D. Ti4+
E. Zn2+

Answers

Ni²⁺ is the only ion on the list that can exist as both a high-spin and a low-spin octahedral complex. The correct option is B.

An electrostatic model called the crystal field theory (CFT) assumes that the metal-ligand connection is ionic and results only from electrostatic interactions between the metal ion and the ligand. When dealing with anions, ligands are viewed as point charges, and when dealing with neutral molecules, as dipoles.

The crystal field splitting theory predicts that some transition metal ions can exist as either high-spin or low-spin octahedral complexes, depending on the magnitude of the crystal field splitting parameter (Δ) relative to the pairing energy (P).

Of the ions listed, the only one that could exist as either a high-spin or a low-spin octahedral complex is Ni²⁺ (B).

Mn²⁺ (A) is a d⁵ ion and will always form a high-spin octahedral complex due to its large number of unpaired electrons.

Sc³⁺ (C) is a d⁰ ion and does not form octahedral complexes with ligands.

Cu²⁺ (D) is a d⁹ ion and typically forms a low-spin octahedral complex due to the stability of the half-filled d⁹ configuration.

Zn²⁺ (E) is a d¹⁰ ion and does not have any unpaired electrons to undergo spin pairing, so it will always form a low-spin octahedral complex.

Therefore, the correct answer is B) Ni²⁺.

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If 46 grams of sodium react with excess calcium nitrate, how many grams of calcium will
form? The molar mass of sodium is 23 grams/mole, and the molar mass of calcium is 40
grams/mole.

Answers

Answer: 40 grams of calcium will form in the reaction.

Explanation:

The balanced chemical equation for the reaction between sodium and calcium nitrate is:

2 Na + Ca(NO3)2 → 2 NaNO3 + Ca

This means that for every 2 moles of sodium that react, 1 mole of calcium is produced.

To determine the amount of calcium produced from 46 grams of sodium, we first need to convert the mass of sodium to moles using its molar mass:

46 g Na x (1 mole Na / 23 g Na) = 2 moles Na

Since there is excess calcium nitrate, all 2 moles of sodium will react completely and produce 1 mole of calcium. The mass of calcium can be calculated using its molar mass:

1 mole Ca x 40 g Ca / 1 mole Ca = 40 g Ca

Therefore, 40 grams of calcium will form in the reaction.

Which body parts don’t fossilize because animals tend to consume them?
A.
bones
B.
muscles
C.
shells
D.
teeth

Answers

Answer:

b. muscles is the answer

Explanation:

muscles is a meat, animals eat meat

where does the material in cement come from? choose one: a. it is deposited with sediment grains. b. it forms as sediment grains recrystallize. c. it forms as sediment grains chemically weather. d. it forms as ions precipitate out of the water in the pore spaces between grains.

Answers

The materials comes as It is deposited with sediment grains. (a)

The material used to make cement is composed of minerals found in sedimentary rocks. These sedimentary rocks are formed when sediment grains are deposited in layers and then hardened over time.

These sedimentary rocks can include sand, clay, and minerals such as calcite and gypsum. The sediment grains are the source of the material used to make cement.

The mixture is heated until it forms a paste-like material called clinker. The clinker is then ground into a fine powder, which is the cement we use for construction and other purposes.

So, cement is made from a mixture of these sediment grains, combined with water and other substances such as limestone, iron ore, and aluminum oxide. (a)

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How long did the Cambrian period last for?

Answers

Answer: 541 million to 485.4 million years ago

Explanation:

31.1 grams of O2 and 84.3 grams of F2 are placed in a container with a volume of94.9 L. Find the total pressure if the gasses are at a temperature of 55.77 ° c

Answers

In this question, we have:

31.1 grams of O2

84.3 grams of F2

94.9 L of total volume

55.77°C of temperature which is equal to 328.92 K

Now, to find the pressure of this container, we can find the number of moles of each gas, and add both values together making it one value of moles and then we will use the Ideal gas law to find the pressure, so let's start with O2

The molar mass of O2 is 32g/mol and we have 31.1 grams

32g = 1 mol

31.1g = x moles

x = 0.972 moles of O2

Now for F2, the molar mass is 38g/mol, and we have 84.3 grams

38g = 1 mol

84.3g = x moles

x = 2.22 moles of F2

Now we add these values, 0.972 + 2.22 = 3.192 moles

And now we can use the ideal gas law formula:

PV = nRT

Remember that R is the gas constant, 0.082

P * 94.9 L = 3.192 * 0.082 * 328.92

94.9P = 86.1

P = 0.91 atm

Which of the following statements does not describe the structure of an atom? (3 points) a Inside the nucleus of an atom are protons and neutrons. b Protons are positively charged sub-atomic particles. c Electrons are negatively charged sub-atomic particles. d Most of the mass of an atom comes from the electron cloud.

Answers

Answer:

D.

Explanation:

The electron cloud has negligible mass. Most mass come from the nucleus.

Directions:

Read the question carefully.

Write your response in at least three (3) sentences.

Use the HINT and SENTENCE STARTERS to help you with the response.

Question:

Imagine you're cooking dinner for a few of your friends. You decide to make a salad with homemade dressing. Why do you need to think about the polarity of the different ingredients in your salad dressing in order for it to turn out well? [HINT: "Like dissolves like"]

Sentence Starters:

- For the ingredients of a salad dressing to mix well, they should either...

- If both polar and nonpolar ingredients should be used, then they ...

Answers

The reason I have to think about the polarity of the different ingredients in my salad dressing in order for it to turn out well is simply because so that the soluble ingredients can dissolve completely and have a nice taste.

What is polarity?

Polarity can simply be defined as a state of an atom or a molecule inherent in a body that exhibits opposite properties or powers in opposite parts or directions.

So therefore, the reason I have to think about the polarity of the different ingredients in my salad dressing in order for it to turn out well is simply because so that the soluble ingredients can dissolve completely and have a nice taste.

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1. How many atoms are in 3.5 moles of nickel?

Answers

The number is 6.022 x 10^23 atoms/mol.

(only the rght letter and a explanation you don't really need the explanation ill give brainiest)
What happens when an electrically charged pencil is placed close to water running from a faucet?

A. The pencil attracts the water.
B. The pencil becomes positively charged.
C. The water attracts the pencil.
D. The water repels the pencil.

Answers

Answer:

Explanation:

Option c)  The water attracts the pencil.  

Pencils are though formed of wood that acts as a bad conductor of electricity, quite strangely pencils can be electrically charged.

Here pencils have non-metal carbons present in its graphite tip and this makes the pencils charged.

When this pencil is held near the water of the tap, the hydrogen ions get attracted and thereby the water gets attracted to the pencil.

Water, however, is an excellent conductor of electricity and therefore water and electricity are a dangerous combination.

Which covalent bond is the most polar?
a) S-O
b) C=0
c) Se-F
d) H-O
e) O=O

Answers

A I think let me know if it’s wrong

For the reaction PCl₅(g) ⇌ PCl₃(g) + Cl₂(g) Kp = 1.45 × 10⁻⁴ at 160 °C. A 1.00 L vessel at 160 °C is filled with PCl₅(g) at an initial pressure of 2.50 atm and allowed to come to equilibrium. What will be the pressure (in atm) of Cl₂(g) at equilibrium?

Answers

The pressure of Cl₂ at equilibrium is approximately 2.50 atm. To determine the pressure of Cl₂(g) at equilibrium in the given reaction PCl₅(g) ⇌ PCl₃(g) + Cl₂(g), we can use the equilibrium constant (Kp) and the initial pressure of PCl₅.

The balanced equation for the reaction is:

PCl₅(g) ⇌ PCl₃(g) + Cl₂(g)

The expression for the equilibrium constant (Kp) is:

Kp = (P_PCl₃ * P_Cl₂) / P_PCl₅

Given:

Kp = 1.45 × 10⁻⁴

Initial pressure of PCl₅ (P_PCl₅) = 2.50 atm

We need to determine the pressure of Cl₂ (P_Cl₂) at equilibrium.

Let's assume that at equilibrium, the pressure of PCl₃ is x atm and the pressure of Cl₂ is y atm.

Using the expression for Kp:

Kp = (P_PCl₃ * P_Cl₂) / P_PCl₅

1.45 × 10⁻⁴ = (x * y) / 2.50

Rearranging the equation:

x * y = 1.45 × 10⁻⁴ * 2.50

x * y = 3.63 × 10⁻⁴

Since the total pressure at equilibrium is the sum of the partial pressures, we have:

P_total = P_PCl₃ + P_Cl₂

But P_total is equal to the sum of the initial pressures:

P_total = P_PCl₅

Therefore:

P_PCl₅ = P_PCl₃ + P_Cl₂

Substituting the given values:

2.50 atm = x + y

Since x * y = 3.63 × 10⁻⁴, we can solve this system of equations to find the values of x and y.

We can rewrite the equation 2.50 atm = x + y as y = 2.50 atm - x, and substitute it into x * y = 3.63 × 10⁻⁴:

x * (2.50 atm - x) = 3.63 × 10⁻⁴

Expanding and rearranging:

2.50x - x² = 3.63 × 10⁻⁴

Rearranging further:

x² - 2.50x + 3.63 × 10⁻⁴ = 0

We can solve this quadratic equation to find the values of x and y. However, in this case, we can simplify the calculations by using an approximation method.

Since the value of Kp is very small (1.45 × 10⁻⁴), it indicates that the concentration of PCl₃ and Cl₂ at equilibrium will be significantly smaller compared to PCl₅. Therefore, we can make an approximation assuming that x and y are negligible compared to 2.50 atm.

Using this approximation, we can consider the equation 2.50 atm = x + y as 2.50 atm ≈ y, which means that y ≈ 2.50 atm.

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If Manuel puts $2500 into his bank account each month and spends $3000 from his bank account each month, what is the average rate of change of his bank account balance?A) -5 percent per monthB) 83 percent per monthC) -$500 per monthD) There is no average rate of change.E) None of the above in an adult female patient with classic cushing disease (caused by an adrenal adenoma), the preferred treatment is: Given the series:[infinity]k=1 9k(k+2)k=1[infinity] 9k(k+2does this series converge or diverge?divergesconvergesIf the series converges, find the sum of the series:[infinity]k=1 9k(k+2)=k=1[infinity] 9k(k+2)= 2) Find the sum of the series: [infinity]n=0(1)n4n3(2n+1)! In adulthood, one's beliefs and goals guide the nature of one's actions, and actions create a context for the revision of one's goals. This process illustrates which of the following ideas?a)humanizing of valuesb)role overloadc)the social clockd) the bidirectional nature of developmentAnswer: d) the bidirectional nature of development Which of the following is an important concept inDarwins theory of evolution by natural selection?A descent with modificationB homologous moleculesC processes that change the surface of EarthD the tendency toward perfection A close reading of Carl Sandburgs poem Grass reveals that the speaker is _____. Carl Sandburg the grass the dead bodies people on a train Sorry didnt mean to post this. the role of bike salts in the alimentary canal is The father supports his son's interest, dancing.O A. subjectOB.appositiveO C.object of the verbO D.object of the preposition Please help me solve this problem Read these lines from the poem: And I must be, as he had been--alone, "As all must be," I said within my heart What do these lines imply about the speaker in the poem? O He feels that time is passing him by. O He feels that his heart has been broken. O He feels that each one of us really is alone. O He feels that no one really knows him. Find the distance between the points. (-4, -1) and (-5, -1) Solve for the value of q.46(q-3) what is the relative change in a market value-weighted index? enter your answer as a decimal number or with the percentage sign. HELP FAST WILL GIVE BRAINLIEST AND 5 STARS ALSO 30 POINTS!Select the correct answer.Which sequence of transformations proves that shape I is similar to shape II?A. a 90 counterclockwise rotation about the origin, and then a dilation by a scale factor of 2B. a reflection across the x-axis, and then a dilation by a scale factor of 3C. a reflection across the x-axis, and then a dilation by a scale factor of 2D. a 90 counterclockwise rotation about the origin, and then a dilation by a scale factor of 3 who selects chief executive in Cuba How many steps are in the SECRET to keyboarding success video?4567 the length of a rectangle is 3 inches more than its width if the premiter is 42 inches find the deminisons of the rectangle BRAINLIEST PLEASE HURRYFill in the blank in the following sentence with the appropriate verb below.Tu _____ Sabine? C'est ma soeur!O A. saitB. connaisO C. connatD. sais Bashir has a toy car collection. He keeps some in display case and the rest on the wall. 136 of his toys are on the wall and 15% of the toys are in the display what is the total number of toys in barshirs collection