how can 100. ml of sodium hydroxide solution with a ph of 13.00 be converted to a sodium hydroxide solution with a ph of 12.00 ? responses

Answers

Answer 1

To convert 100 ml of sodium hydroxide solution with a pH of 13.00 to a sodium hydroxide solution with a pH of 12.00, one method would be to dilute the solution with distilled water.

By diluting the solution, the concentration of hydroxide ions (OH-) will decrease, thus reducing the pH of the solution. The exact amount of distilled water needed to reach a pH of 12.00 will depend on the original concentration of the sodium hydroxide solution. However, you can add small amounts of distilled water to the solution and measure the pH after each addition until the desired pH is reached. It's important to note that the conversion of sodium hydroxide solution from pH 13.00 to 12.00 involves a significant decrease in the concentration of hydroxide ions, and care should be taken when handling strong alkaline solutions.

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Related Questions

many students have difficulty understanding how giving up an electron to another atom fills the valence of the atom that gave up the electron. it seems counterintuitive to them that losing an electron actually fills their valence. imagine you are a teacher trying to explain this particular concept to a student. briefly describe what you would say.

Answers

Giving up an electron to another atom can fill the valence of the atom that gave up the electron, because it can achieve a stable electron configuration by having a full outer shell.

When atoms form chemical bonds with each other, they do so in order to achieve a more stable electron configuration. For many atoms, this means having a full outer shell of electrons. When an atom gives up an electron to another atom, it can achieve a stable electron configuration by having a full outer shell.

For example, consider the element sodium, which has one valence electron. Sodium can achieve a more stable electron configuration by giving up this electron to another atom, such as chlorine. Chlorine, on the other hand, has seven valence electrons and can achieve a stable electron configuration by gaining one electron from sodium. Both chlorine and sodium achieve noble configurations.

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If an atom has 3 protons in its nucleus, how many electrons must it have

Answers

Answer:

3

Explanation:

REMEMBER :

Protons and electrons are always the same.

Hope this is correct and helpful

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When a small lump of calcium metal,
Ca, is added to water, it reacts giving
off hydrogen gas. A solutic of
calcium hydroxide, Ca(OH)₂, is also
formed in the reaction.
Write a balanced symbol equation,
including state symbols, for the
reaction.

Answers

Answer:

The reaction of calcium metal with water to form calcium hydroxide and hydrogen gas can be represented by the following balanced equation:

Ca(s) + 2H2O(l) → Ca(OH)2(aq) + H2(g)

In this equation, "Ca" represents calcium metal, "H2O" represents water, "Ca(OH)2" represents calcium hydroxide, and "H2" represents hydrogen gas. The state symbols (s) , (l) and (aq) represent solid, liquid and aqueous state respectively.

This equation represents the transfer of electrons from the calcium metal to the water molecules, resulting in the formation of calcium hydroxide (a base) and hydrogen gas. The equation is balanced, with one calcium atom on the reactant side and one on the product side, and two water molecules on the reactant side and one calcium hydroxide molecule and two hydrogen atoms on the product side.

If dichloramine formation is spontaneous under standard conditions, the equilibrium constant must be: A.< 0. B.> 0 and < 1.

Answers

If dichloramine formation is spontaneous under standard conditions, the equilibrium constant must be B. > 0 and < 1.

In a spontaneous reaction, the equilibrium constant (K) is greater than zero, indicating that the forward reaction is favored. However, since the reaction is not at complete equilibrium, the equilibrium constant is less than 1. This implies that the concentration of the products is lower than the concentration of the reactants at equilibrium.For a spontaneous reaction, the Gibbs free energy change (ΔG) must be negative. The equilibrium constant (K) is related to ΔG by the equation: ΔG = -RTln(K), where R is the gas constant and T is the temperature in Kelvin.

If ΔG is negative, then -RTln(K) is also negative. Since R and T are positive, ln(K) must be negative. This implies that K must be less than 1.

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Five waves measure 25 cm and pass a point in 1 s. What is:
the wavelength
the frequency
the period?

Answers

Five waves measure 25 cm and pass a point in 1 s then the wavelength is 5cm the frequency is 5Hz and the period is 5 s

Wavelength is the distance between identical point in the adjacent cycle of a waveform signal propagated in space or along a wireFrequency is the number of waves that pass a fixed point in unit timeThis means the period of a wave is the inverse of the frequency so the formula for wave period is wavelength divided by velocity

Here given data is

Five waves measure 25 cm and pass a point in 1 s

So, the wavelength = λ = v/f

Wavelength =  25 cm/5 waves

Wavelength = 5cm

Frequency = 1/T

Frequency = 1/5 = 5Hz

Period = 1/frequency

Period = 1/5 = 5 s

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Shrinkage is a common problem encountered during hot
filling.
True False

Answers

False. Shrinkage is not a common problem encountered during hot filling.

Shrinkage refers to the reduction in volume or size of a material during cooling or solidification. In the context of hot filling, which is a process of filling liquid products into containers at high temperatures, shrinkage is not a typical problem.

Hot filling often involves using heat-resistant containers and filling the product at an elevated temperature to ensure microbial safety and product stability. The high temperature of the product and the container helps minimize any potential shrinkage that may occur during cooling.

However, other issues such as thermal expansion of the container or product, container deformation, or seal integrity may need to be addressed during the hot filling process. But specifically, shrinkage is not a common concern in this context.

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Consider a supersonic flow past a compression corner with a ramp angle of theta=20 degrees. The upstream properties are M1=3 and pl=2116 lbf/ft^2. A Pitot tube is inserted in the flow downstream of the corner and the resulting oblique shock wave. Calculate the value of the pressure measured by the Pitot tube. First draw a careful sketch of the entire flow field and show station numbers: 1, 2, 3. Hint: Do you work in the following order: Shock wave angle beta, Mnl, Mn2, po2/pol, M2, po3/po2, pol/pl, po3

Answers

The pressure measured by the Pitot tube is approximately 6,647 lbf/ft^2. This can be calculated by first finding the shock wave angle beta using the given ramp angle of 20 degrees and Mach number of 3,

and then using the oblique shock relations to solve for the other properties at stations 1, 2, and 3, including the pressure measured by the Pitot tube at station 3.

The solution involves using the oblique shock relations to find the properties of the flow at different stations, starting with the shock wave angle beta and then working through the various properties at each station, including the pressure measured by the Pitot tube at station 3. The solution requires a careful sketch of the flow field and an understanding of the physics of compressible flow.

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____ are designed to make necessary adjustments to place a satellite into stable orbit.

Answers

there an A B C D thing?

Explanation:

890

Answer: thrusters

Explanation: got it right

How does the periodic table help to determine the number of valence electrons for an element? ​

Answers

Answer:

valence electrons are determine by the numbers at the top of the grop so group 1 has 1 valence electron, group 2 has 2 valence electrons, groups 3-12 have no valence electrons, group 13 has 3 valence electrons, group 14 has 4 valence electrons, group 15 has 5 valence electrons, group 16 has 6 valence electrons, group 17 has 7 valence electrons and group 18 has 8 valence electrons exept helium. helium has 2 valence electrons.

Explanation:

How will the following stresses affect this equilibrium system (iron thiocyanate system): Fe+3 {pale yellow} + SCN- FeSCN+2 {red} + heatA) Add KSCN (a source of adding SCN- ions in solution)?

How will the following stresses affect this equilibrium system (iron thiocyanate system): Fe+3 {pale

Answers

ANSWER

The addition of KSCN to the system will shift the arrow to the product sides

EXPLANATION

Firstly, we need to define the term chemical equilibrium.

Chemical equilibrium can be defined as the state in which the reactants and the products are present in concentration and do not have a tendency to change with time.

To determine the shift of the chemical equilibrium in the reaction provided, state the le Chatelier's principle

Le Chatelier's principle states that when external constraints such as temperature, pressure, concentration, etc system in chemical equilibrium, the equilibrium arrow shifts so as to annul the effect of the external constraints.

From the reaction provided

\(\text{ Fe}^{+3}\text{ + SCN}^-\text{ }\rightleftarrows\text{ FeSCN}^{+2}\text{ + heat}\)

The above equation shows that the reaction is an exothermic reaction because heat is liberated to the surroundings.

When one of the reactants is supplied to the system constantly, more of its product is formed. Hence, the equilibrium arrow shifts to the right-hand side of the reaction.

Hence, the addition of KSCN to the system will shifts the arrow to the product sides

How many moles are on a 7.0 cm x 10.0 cm sheet of 1.0 mm thick aluminum foil? The density of the material is 2.702 g/mL.

Answers

The number of mole present in the aluminum foil, given that the foil has a thickness of 1.0 mm is 0.7 mole

How do I determine the number of mole?

We'll begin by obtaining the mass of the aluminum foil. Details below:

Density of aluminum = 2.702 g/mLDimension = 7 cm × 10 cm × 1 mm = 7 cm × 10 cm × 0.1 cmVolume of aluminum = 7 cm × 10 cm × 0.1 cm = 7 cm³ = 7 mLMass of aluminum =?

Density = mass / volume

Cross multiply

Mass = Density × Volume

Mass of aluminum = 2.702 × 7

Mass of aluminum = 18.914 g

Finally, we shall determine the number of mole present. Details below:

Mass of aluminum = 18.914 gMolar mass of aluminum = 27 g/mol Number of mole of aluminum =?

Mole = mass / molar mass

Number of mole of aluminum = 18.914 / 27

Number of mole of aluminum = 0.7 mole

Thus, the number of mole is 0.7 mole

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I Need help with this

I Need help with this

Answers

In the given reaction  ₉₆²⁴⁶Cm + ₆¹²C ---> 4 ¹on + X  it shows an example of an artificial transmutation reaction.

An artificial transmutation reaction may resemble this. The method of causing nuclear reactions by blasting atomic nuclei with high-energy particles like ions or neutrons is referred to as artificial transmutation.

In this instance, the transmutation is induced by bombarding the carbon nucleus (C) with additional particles or a high-energy beam, resulting in the production of the following products: Element X and 4 1on (Helium-4)

Blasting an element with a basic particle, an element can be artificially transmuted into a different element.

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hey Google please how what types of elements are crop in P block right with example​

Answers

Answer:

The elements of groups 13, 14, 15, 16, 17, 18 are called p block elements.examples: boron (B), aluminium (Al), gallium (Ga), indium (In), thallium (Tl),and so on

Explanation:

11.All of the following properties of a diamond are physical except...Select one:a. It does not conduct electricity.b. It produces carbon dioxide when burned in pure oxygen.c. It is transparent like glass.d. It is the hardest material.

Answers

Answer

b. It produces carbon dioxide when burned in pure oxygen.

Explanation

The reaction between diamond and oxygen, producing carbon dioxide is not a physical property of diamond, it is a chemical property because breaking and synthesis of chemical bonds occur.

Sarah took a penny and placed it in sunlight for an hour. She took another penny and put it in the shade for the same amount of time. The penny in the sunlight was warmer than the one in the shade. Why did the penny left in the sunlight feel warmer than the one left in the shade?

Answers

The penny left in sunlight felt warmer than the one left in the shade because of the absorption of radiant energy from the sun.

Sunlight contains a significant amount of energy in the form of electromagnetic radiation, including visible light, infrared radiation, and ultraviolet radiation. When the penny is exposed to sunlight, it absorbs some of this energy, causing the temperature of the penny to increase.

On the other hand, the penny in the shade is not exposed to as much sunlight and therefore absorbs less energy from the sun, resulting in a lower temperature. This is similar to how a car parked in the sun can become much hotter than a car parked in the shade, due to the absorption of radiant energy from the sun.

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What NaCl concentration results when 274 mL of a 0.740 M NaCl solution is mixed with 597 mL of a 0.390 M NaCl solution

Answers

The resulting NaCl concentration when 274 mL of a 0.740 M NaCl solution is mixed with 597 mL of a 0.390 M NaCl solution can be calculated using the principles of dilution and the volume ratios of the two solutions.

To find the resulting concentration, we can use the equation for dilution:

C1V1 = C2V2

Where C1 and V1 are the initial concentration and volume of the first solution, and C2 and V2 are the final concentration and volume of the diluted solution.

In this case, we have:

C1 = 0.740 M

V1 = 274 mL

C2 = ?

V2 = 274 mL + 597 mL = 871 mL

Substituting the values into the dilution equation:

(0.740 M)(274 mL) = C2(871 mL)

Solving for C2:

C2 = (0.740 M)(274 mL) / (871 mL)

C2 = 0.232 M

Therefore, the resulting NaCl concentration when the two solutions are mixed is 0.232 M.

In summary, by applying the principle of dilution and using the volume ratios of the two solutions, we can determine that the resulting NaCl concentration after mixing 274 mL of a 0.740 M NaCl solution with 597 mL of a 0.390 M NaCl solution is 0.232 M.

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the mass of a proton is

A: the same as an electron

B: the same as an neutron

C: more than a neutron

D: less than an electron ​

Answers

Answer:

A

Explanation:

the same as an electron

The answer is, A.....................

!!!PLEASE HELP!!!

Circle the element in each of the following pairs with the greater atomic size:
a) lithium or boron
b) magnesium or strontium
c) cesium or lead
d) sodium or argon

Answers

The correct answer is letter D

Which ion has the largest radius?
a. Na+
b. K+
c. Ca2+
d. Ga3+
e. Mg2+

Answers

Out of the given options, the ion with the largest radius is e. Mg2+. This is because the radius of an ion is determined by the number of electrons in its outermost shell, known as the valence shell.

Mg2+ has lost two electrons from its valence shell, resulting in a decrease in the electrostatic attraction between the remaining electrons and the nucleus. This results in a larger radius compared to its neutral counterpart, Mg. On the other hand, options a, b, c, and d all have a smaller radius than Mg2+ due to their smaller number of electrons in the valence shell. Na+, K+, and Ca2+ have all lost one or two electrons from their valence shell, resulting in a decrease in radius. Ga3+ has lost three electrons, making it even smaller. In summary, the ion with the largest radius out of the given options is Mg2+, which has lost two electrons from its valence shell.

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What is the vol., in mL, of a sample of glycerol with a density of 1.20 g/mL and a mass of 43.7 g?
36.4

Answers

The volume of the glycerol sample is 36.4 mL.

To calculate the volume of a substance, we can use the formula:

Volume = Mass / Density.

Given that the mass of the glycerol sample is 43.7 g and the density is 1.20 g/mL, we can substitute these values into the formula:

Volume = Mass / Density

Volume = 43.7 g / 1.20 g/mL

Volume = 36.4 mL

In this calculation, we use the formula Volume = Mass / Density, where the mass is given in grams and the density is expressed in grams per milliliter. Dividing the mass by the density gives us the volume in milliliters, as density is defined as mass per unit volume.

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An ion has 26 protons, 28 neutrons, and 24 electrons. Which element is this ion? a. Xe b. Ni c. Fe d. Mg e. Cr

Answers

The ion that has 26 protons, 28 neutrons, and 24 electrons is Iron (Fe) (option c).

An element can be determined by the number of protons in the nucleus of its atom. The number of protons present in an atom is referred to as the atomic number of the element.

This means that the number of protons in an atom is unique to a specific element.

Iron (Fe) has 26 protons in the nucleus of its atom.

Therefore, an ion with 26 protons is an ion of the element iron (Fe).

Magnesium (Mg) has 12 protons, Chromium (Cr) has 24 protons, Xenon (Xe) has 54 protons and Nickel (Ni) has 28 protons.

Thus, an ion which has 26 protons, 28 neutrons, and 24 electrons  is Fe (option c)

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Which pod would have a greater change in velocity if you exerted the same strength force, a less massive pod or a more massive pod

Which pod would have a greater change in velocity if you exerted the same strength force, a less massive

Answers

The answer is Russ massive hope this helps

In this week's thin-layer chromatography experiment, the use of 1 M HCl will demonstrate the dependence of dye color on ________.

Answers

In this week's thin-layer chromatography experiment, the use of 1 M HCl will demonstrate the dependence of dye color on pH. Thin-layer chromatography (TLC) is a versatile technique for separating components of a mixture, specifically, it's used to separate organic molecules. TLC is typically used to identify and quantify the amount of the components present in a mixture.

TLC plates, which are made of glass, metal, or plastic and coated with a thin layer of silica gel or alumina, are used to conduct the experiments. The mobile phase moves through the stationary phase as the samples move through it. The mobile phase moves up the plate, and the less polar components move up the plate with it. Content loaded in this week's thin-layer chromatography experiment, the use of 1 M HCl will demonstrate the dependence of dye color on pH. The elution of dyes from food and candy products is commonly used in TLC. When an acid is added to the dye mixture, the pH changes, resulting in the appearance of a different color.

The basic principle behind this is the effect of pH on the chemical equilibrium, which can affect the appearance of the dye. This demonstrates how the color of dyes is dependent on pH, which can be observed using a TLC plate.

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.
The earth is slightly tilted on its axis. How much is it tilted?

23.5 degrees
28 degrees
20.5 degrees
25 degrees

Answers

The answer is 23.5 degrees
earth is tilted 23.5 degrees

If we had a hetergenous mixture of realgar and orpiment which by mass was 61.4 rsenic. by mass what percent of the mixture is realgar?

Answers

Given a heterogeneous mixture with 75% realgar, the percentage of realgar in the mixture is 75%. This calculation is based on the mass percentages of realgar and orpiment and the total arsenic content.

The percentage of realgar in the mixture is 75%.

Here's the solution:

Realgar has a mass percent of 70.029%.

Orpiment has a mass percent of 60.903%.

The mixture is 61.4% arsenic.

To calculate the percentage of realgar in the mixture, we can use the following equation:

percentage of realgar = (70.029 * 61.4) / 130.932

= 75.0

Therefore, the percentage of realgar in the mixture is 75%.

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What is the half-life of a radioisotope if 25. 0 grams of an original 200. -gram sample of the isotope remains unchanged after 11. 46 days?.

Answers

The half-life of a radioisotope if 25.0 grams of an original 200. -gram sample of the isotope remains unchanged after 11.46 days is 3.82 days.

What is radioisotope?

The radioactive isotopes of an element are known as radioisotopes. They can also be described as atoms with an excessive amount of energy in their nucleus or unstable neutron-proton combinations.

A radioisotope's unstable nucleus can form either naturally or as a result of atomic manipulation. Radioisotope production can take place using a cyclotron or a nuclear reactor, depending on the situation. Molybdenum-99, which has a high neutron content, can be produced most efficiently in nuclear reactors, whereas fluorine-18, which has a high proton content, can be produced most efficiently in cyclotrons.

Uranium is the most well-known illustration of a naturally-occurring radioisotope. Uranium-238 makes up 99.9% of naturally occurring uranium; the remaining 0.7% is the less stable and more radioactive uranium-235, which has three fewer neutrons in its nucleus.

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The provided statement states that a radioisotope's half-life is 3.82 days if 25.0 milligrams of a 200.0-gram initial sample of something like the isotope remain intact after 11.46 days.

Who or what are radioisotopes?

An unstable chemical element that releases radiation as it breaks down and becomes more stable. Both natural habitat and then a laboratory can manufacture radioisotopes. They are used in medical treatments and imaging examinations. also called a radionuclide.

Briefing:

Since we now know that first phase kinetics governs radioactive decay,

Therefore, the following is the equation for the rate rule for first order kinetics:

\(k=\frac{2.303}{t} \log \frac{a}{a-x}\)

where,

k = rate constant

t = time taken for decay process  = 11.46 days

a = initial amount of the reactant  = 200 g

After the decay process, the quantity remaining is equal to 25 g.

By plugging data into the equation above, we can get the rate constant.

\(k=\frac{2.303}{11.46} \log \frac{200}{25}=0.1814\)

We now need to determine a radioisotope's half life.

Formula used : \(t_{1 / 2}=\frac{0.693}{k}\)

We obtain the half life by entering the value of "k" into this calculation.

\(t_{1 / 2}=\frac{0.693}{0.1814}=3.820\)

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The complete question is-

What is the half-life of a radioisotope if 25.0 grams of an original 200.-gram sample of the isotope remains unchanged after 11.46 days?

(1) 2.87 d

(2) 11.46 d

(3) 3.82 d

(4) 34.38 d

Diamond has a density of 3.52 g/mL. What is the volume in cubic centimeters of a diamond with a mass of 5 g

Answers

The given density of diamond is 3.52 g/m L. And, the mass of diamond is given as 5 g. We need to calculate the volume of a diamond with a mass of 5 g.

To find the volume of the diamond, we can use the formula for density that is given as: Density = mass/volume Rearranging the formula for volume, we get: Volume = mass / density So, substituting the given values in the above formula: Volume = 5 g / 3.52 g/m L We know that 1 mL = 1 cm³Therefore,Volume = 5 g / 3.52 g/cm³ = 1.42 cm³Hence, the volume in cubic centimeters of a diamond with a mass of 5 g is 1.42 cm³.

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An ion has 26 protons, 29 neutrons, and 23 electrons. The symbol for the ion is? The atomic mass is in the upper right corner. A) 52Cu3+ B) 5573- C) 55Fe3+ D) 52Cu3- E) 55Fe3-

Answers

Answer:55Fe3+

Explanation:The net charge on this ion is +3, because it has 26 protons and 23 electrons, that is 26+(-23)=+3.

atomic number of an atom is the number of protons.

The atomic mass is the sum of the protons and neutrons. The net charge is the difference between the number of protons, which have positive charges, and electrons, which have negative charges.

iron's atomic number is 26.

The atomic mass of this ion is 55,which is the sum of its protons and neutrons.

6)
Use VSEPR to predict the electron-pair geometry of O2.
A)
linear
B)
trigonal planar
C)
tetrahedral
ientific
Calc
D)
trigonal bipyramidal

Answers

Answer:

A.) Linear

Explanation:

The geometry of the molecular oxygen (O₂) is linear. Thus, option (A) is correct.

What is VSEPR theory?

Valence shell electron-pair repulsion theory (VSEPR theory) is used to predict the molecular structure, and bond angles around a central atom of a molecule by using the number of bonds and lone electron pairs in Lewis structure.

The VSEPR model considers that electron pairs present in the valence shell of a central atom have an arrangement so that repulsions between these electron pairs will be minimized by maximizing the distance between them.

The valence electrons of a central atom form either bonding pairs or lone pairs. The electrostatic repulsion of these electrons is minimized when several regions of high electron density maximum possible distance.

The oxygen molecule has linear geometry with a bond angle of 180°. Each oxygen in oxygen molecule has two lone pairs of electrons on it.

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The system below was at equilibrium in a
9.0 L container. What change will occur
for the system when the container is
shrunk to 3.0 L?
51.8 kJ + H₂(g) + 1₂(g) = 2HI(g)
Hint: How many moles of gas are on each side?
A. The reactions shifts to the right (products) to produce
fewer moles of gas.
B. There is no change because there are the same
number of moles of gas on both sides.
C. The reactions shifts to the left (reactants) to produce
more moles of gas.

The system below was at equilibrium in a9.0 L container. What change will occurfor the system when the

Answers

The number of moles of gas is the same on both sides, the change in volume will not affect the equilibrium position of the reaction. The answer is B) There is no change because there are the same number of moles of gas on both sides.

To determine the change that will occur when the container is shrunk from 9.0 L to 3.0 L for the given reaction:

51.8 kJ + H₂(g) + I₂(g) → 2HI(g)

We need to consider the number of moles of gas on each side of the reaction.

On the left side, there are 2 moles of gas (H₂ and I₂), while on the right side, there are 2 moles of gas (2HI). Both sides have an equal number of moles of gas.

Therefore, the correct answer is B) There is no change because there are the same number of moles of gas on both sides.

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Can someone please help, ty!!(Will mark brainliest) for most domestic animals, trophic-level efficiency is usually ________. Which of the following is the PRIMARY biological purpose of the hormone leptin?A. Slow down overconsumption when energy storage is too highB. Send blood glucose into body for useC. Facilitate energy intake when energy storage is too lowD. Regulate energy expenditure via signals to the brain A local authority is planning to expand its provision of schools in its local community. Whilst the local authority has decided that PPP should not be used to procure these facilities, it still aims to take a loan to fund the design and build cost of the project. The annual budget the local authority has available to support the servicing and repayment of this loan, the life cycle cost (repairs), the facilities management costs (management, utility, and maintenance) and the final demolition cost is $2 Million.The following information is given to you to offer advice on the target construction cost that needs to be provided to potential bidders. Duration of design and build (D&B) 1 year Life of school 25 years Life Cycle and facilities management cost 10% of D&B cost per year Demolition cost at the end of the schools life $1Ma) Assuming a borrowing interest rate of 9% and that the loan is to be fully paid back by the end of the schools life, calculate the target design and build cost that should be provided to potential bidders. You may ignore the effect of inflation in this question. (12 marks)b) When the tenders for the projects were received, it was found that the lowest bidder submitted a tender for 10.2 Million. Given the annual budget noted above, can the local authority pay back all of the loans associated before 35 years? You may assume that the life cycle and facilities management costs are now 10% of tendered value.(8 marks) 3y= x - 9y= -x + 1 using the graphing method,which of the following choices is the solution of the system?(-3,-2)(3,-2)infinite solution.no solution. If I know that f (2) = 4, what is another way I can write my answer? A decreasing-cost industry is on whichMultiple Choice a contraction of the industry will decrease unit costs. b input prices fall or technology improves as the industry expands c the long-run supply curve is perfectly elastic. d the long-run supply curve is upsloping. if a toaster oven is labeled as 1 kw. if it is connected to a 120 v source.(a) What current (in A) does the toaster carry?(b) What is its resistance (in ) a solid 10cm cube is cut into 1cm cubes. these smaller cubes are then used to make the largest possible cube that looks solid from the outside but hollow inside. how many of the original 1cm cubes are not used to make the largest cube what huge magnetic storms may be responsible for variations in temperature and precipitation? Functions of input hardware which statement about sternbergs triangular theory of love is most accurate? A firm has the production function q = f(L, K) = _0.5 +K0.5 This form has: increasing marginal product None of the above. increasing returns to scale decreasing returns to scale constant returns to scale A disk of radioactively tagged benzoic acid 1 cm in diameter is spinning at 20 rpm in 94 cm? of initially pure water (1 mPa, 1 gm/cm). We find that the solution contains benzoic acid at 7.3 x 10-4 g/cm3 after 10 hr 4 min and 3.43x 109 g/cmafter a long time (i.e., at saturation). What is the mass transfer coefficient? The diffusion coefficient of the acid is 1.8 x10 cm/sec. Q7 (2 pts): Find the surface area of each solid figure the currency of the united arab emirates is fixed relative to the u.s. dollar: this means that the exchange rate between the united arab emirates dirham and other currencies is determined by the dollar exchange rate. this is an example of a exchange rate. Which statement best describes a major reason that Americans supportedHawaiian statehood?A. Most Americans shared at least some ethnic heritage withHawaiians.B. The Hawaiian economy offered opportunities for unemployedAmericans.C. Trade with Hawaii would become cheaper once it used AmericancurrencyD. Hawaii had made huge sacrifices for the United States duringWorld War II. Conrad borrowed $5 400 for a second-hand ATVIf his loan was over the course of 3 years at 17.6% compounded quarterly, how much money will he have to repay to cover his loan?Select one:a. $9 129.76O b. $8793.85O C. $9 226,64O d. $9053.15e. $8 903.41 How do you write an equation for a transformation? The sum of two numbers is 53 and the difference between the numbers is 5.