A system at equilibrium contains I2(g) at a pressure of 0.18 atm and I(g) at a pressure of 0.21 atm . The system is then compressed to half its volume.
Find the pressure of I2I2 when the system returns to equilibrium.
Find the pressure of II when the system returns to equilibrium.

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Actually Welcome to the Concept of the Chemical bonds.

Due to the presence of dipole-dipole forces, polar covalent molecules like water tend to be _____ at room temperature.

The answer is Liquids

Water tends to be liquids at the room temperature.

The coefficients that will balance the equation will be 2,3,2.

For a balanced equation, the number of atoms of each element on the reactant side must be equal to those of the product side.

Thus, the balanced equation of the reaction will be:

2Fe + 3Cl2 → 2FeCl3

Consequently, the coefficients of the balanced equation are 2,3,2.

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When a solute and a solvent are mixed, shaking or stirring the mixture will increase the rate at which the solute dissolves into the solvent.

Shaking or stirring agitates the mixture, providing more surface area for the solute particles to come into contact with the solvent particles. As a result, the solute particles can break down and disperse throughout the solvent more quickly and efficiently.

Additionally, shaking or stirring can also increase the temperature of the mixture, which can further accelerate the dissolving process. However, it's important to note that shaking or stirring can also introduce air bubbles into the mixture, which can affect the final solution. Therefore, it's important to be mindful of how much shaking or stirring is necessary for the specific mixture in order to achieve the desired result.

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In the given scenario, a piston-cylinder system receives 51 kJ of heat and loses 12 kJ. The system produces work, and To calculate work we can use W = Q - ΔU formula

The first law of thermodynamics states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system. Mathematically, this can be represented as:

ΔU = Q - W

Where ΔU is the change in internal energy, Q is the heat added to the system, and W is the work done by the system.

In this case, the system receives 51 kJ of heat (Q = 51 kJ) and loses 12 kJ (Q = -12 kJ). We need to calculate the work done by the system (W).

Using the first law of thermodynamics equation, we can rearrange it to solve for W:

W = Q - ΔU

Since the change in internal energy (ΔU) is not given, we cannot directly calculate the work done. Additional information about the change in internal energy or any other relevant parameters would be required to determine the amount of work produced by the system.

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Answer:3.00 x 10(8) m/s=7.25x108m

Explanation:

Sorry, I only got this far.

Answer:

3.18 L

Explanation:

Step 1: Given data

Step 2: Convert P₁ to mmHg

We will use the conversion factor 1 atm = 760 mmHg.

0.985 atm × 760 mmHg/1 atm = 749 mmHg

Step 3: Calculate the final volume of the gas

Assuming ideal behavior and constant temperature, we can calculate the final volume using Boyle's law.

P₁ × V₁ = P₂ × V₂

V₂ = P₁ × V₁/P₂

V₂ = 749 mmHg × 3.65 L/861.0 mmHg = 3.18 L

Taking into account the direction the meter points will be from left to right, the copper (||) ions are being reduced and Zn is being oxidized in the zinc and copper galvanic cell.

The direction of the flow of elections will be indicated by the direction of the needle, which will move from left to right. At this point, oxidation takes place at the Zn electrode, resulting in the release of e-, whilst the reduction of Cu+2 ion takes place at the Cu electrode, leading to the movement of electrons from left to right.

The correct answer is that the copper (||) ions are being reduced while the zinc ions are being oxidized.

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In water, MgI2 will split into Mg2+ and 2I- ions. In water, Al(NO3)3 will split into Al3+ and 3NO3- ions. In water, HClO4 will split into H+ and ClO4- ions. In water, NaCH3COO will split into Na+ and CH3COO- ions.

Water serves as the solvent because the mixture is watery. In very small quantities, water can separate into the ions hydrogen ions (H+) and hydroxide ions (OH).

Given that nitric acid is a monoprotic acid, this makes logical. Also take note that, in accordance with the definition of acids as proton donors, hydrogen is liberated. As a result, H+ ions are produced when nitric acid is dissolved in water.

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An azeotrope is a composition that has the similar components in the liquid phase as compared to the gas phase . therefore, an azeotropic compositions cannot be separated by distillation.

It is not separated by the distillation or fractional process due to the reason of the when the azeotrope mixture is boiled, the gaseous vapor has the similar proportions of constituents or the components as the unboiled mixture.

It can only be separated by azeotropic distillations. This method is also well known by the AD process.

It is a method to break the azeotropes with the help of various mixture of solvent , or separating agent it forms heterogeneous azeotropes.

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Answer:

hope it helps you a little

Answer :The specific heat of aluminium tells you the amount of energy needed to increase the temperature of 1 g of aluminium by 1∘C . You can thus say that in order to increase the temperature of 1 g of aluminium by 1∘C , you need to supply it with 0.214 cal of heat.

Explanation:

Answer:

\(\boxed {\boxed {\sf 1080 \ Joules}}\)

Explanation:

We are asked to calculate the energy needed to raise the temperature of 80 grams of aluminum by 15 degrees Celsius.

We are given the mass and change in temperature, so we will use the following formula:

\(q=mc\Delta T\)

The mass is 80 grams, the change in temperature is 15 degrees Celsius, and aluminum's specific heat capacity is 0.9 Joules per gram degree Celsius.

Substitute the values into the formula.

\(q= (80 \ g)(0.9 \ J/g \textdegree C)(15 \textdegree C)\)

Multiply the first two numbers together. The units of grams will cancel out.

\(q= (80 \ g * 0.9 \ J/g \textdegree C)(15 \textdegree C)\)

\(q= (80 * 0.9 \ J/\textdegree C)(15 \textdegree C)\)

\(q= 72 \ J / \textdegree C (15 \textdegree C)\)

Multiply again. This time, the units of degrees Celsius cancel.

\(q= 72 \ J * 15\)

\(q= 1080 \ J\)

Raising the temperature of 80 grams of aluminum by 15 degrees Celsius requires 1080 Joules of energy.

Answer:

The waves are behaving this way due to the simultaneous water drops landing in the water.

Explanation:

because ima smart baddie (≧▽≦)

The pH of a 0.10 M solution of carbonic acid is 3.12.

To calculate the pH of a solution, we use the equation pH = -log[H+], where [H+] is the concentration of hydrogen ions in the solution. In the case of carbonic acid, the dissociation equation is:

H2CO3 → H+ + HCO3-

The concentration of hydrogen ions in the solution is equal to the concentration of carbonic acid, which is 0.10 M. Plugging this value into the equation for pH, we get:

pH = -log[0.10]

pH = 3.12

Therefore, the pH of a 0.10 M solution of carbonic acid is 3.12.

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When the temperature drops to -18.5 °C then the new volume of the sample of gas is  112.8 L


To find the new volume of the gas, we can use the combined gas law which states that:

(P1V1)/T1 = (P2V2)/T2

Where P is the pressure, V is the volume, and T is the temperature.

We know that the pressure and amount of gas remain constant since nothing else changes. So we can rearrange the formula to solve for V2:

V2 = (P1 x V1 x T2) / (T1 x P2)

We can plug in the given values:

P1 = P2 (constant pressure)
V1 = 142.1 L
T1 = 49.3 °C + 273.15 = 322.45 K (converted to Kelvin)
T2 = -18.5 °C + 273.15 = 254.65 K (converted to Kelvin)

So the equation becomes:

V2 = (142.1 x 254.65) / (322.45)
V2 = 112.8 L

Therefore, the new volume of the gas is 112.8 L

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The acetic acid/acetate buffer system consists of a weak acid (acetic acid, CH3COOH) and its conjugate base (acetate ion, CH3COO-). When a base is added to the buffer system, the following process occurs to neutralize it:

1. The base reacts with the weak acid (acetic acid) in the buffer system to form its conjugate base (acetate ion) and water. For example, if a hydroxide ion (OH-) is added, it reacts with acetic acid as follows:

  OH- + CH3COOH → CH3COO- + H2O

2. The conjugate base (acetate ion) that is formed acts as a reservoir for hydrogen ions (H+). It can accept hydrogen ions from the solution if the pH increases. This helps to maintain the pH of the buffer system within a certain range.

3. The buffer system resists large changes in pH because the equilibrium between the weak acid and its conjugate base is shifted to maintain a relatively constant concentration of both species. This allows the system to neutralize the added base and maintain its acidic nature.

The acetic acid/acetate buffer system neutralizes an added base by reacting with it to form the conjugate base and water, and by utilizing the conjugate base to accept hydrogen ions and maintain the pH of the system.

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When nitric acid (HNO₃) is added to a sodium carbonate solution, carbon dioxide gas (CO₂) is released, and water (H₂O) and sodium nitrate (NaNO₃) are formed. The balanced chemical equation for this reaction is:

2HNO₃ + Na₂CO₃ → CO₂ + H₂O + 2NaNO₃

To write the complete ionic equation, we need to break down the reactants and products into their respective ions:

2H⁺ + 2NO₃⁻ + 2Na⁺ + CO₃²⁻ → CO₂ + H₂O + 2Na⁺ + 2NO₃⁻

In the net ionic equation, we eliminate the spectator ions (ions that appear on both sides of the equation) to focus on the species directly involved in the chemical change:

2H⁺ + CO₃²⁻ → CO₂ + H₂O

The carbon dioxide gas is released as bubbles, and the sodium nitrate dissolves in the solution.

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The rate of diffusion of the butane gas would be 592 m/s.

The rate of diffusion of a gas is inversely proportional to the square root of its molar mass, so lighter gases diffuse faster than heavier gases. The molar mass of neon is 20.18 g/mol, while the molar mass of butane is 58.12 g/mol, which means that butane is significantly heavier than neon.

Assuming that the temperature and pressure are constant, we can use Graham's law of diffusion to estimate the rate of diffusion of butane compared to neon:

rate of diffusion of butane / rate of diffusion of neon = square root of (molar mass of neon / molar mass of butane)

Let x be the rate of diffusion of butane. Then:

x / 402 m/s = sqrt(20.18 g/mol / 58.12 g/mol)

Simplifying this equation gives:

x = 402 m/s * sqrt(58.12 g/mol / 20.18 g/mol)

x = 402 m/s * 1.472

x ≈ 592 m/s

Therefore, at the same temperature, the estimated rate of diffusion of butane gas, C4H10, is approximately 592 m/s.

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Answer:

2.0

Explanation:

Given data:

Mass of object = 60 ounce

Volume of object = 30 cups

Density = ?

Solution:

d = mass/ volume

d = 60 ounce/ 30 cup

d = 2.0 oz/cup

Thus, density of object is 2.0 oz/cup.

The main site of action of benzodiazepine hypnotics is various GABA receptors present throughout the CNS.

Benzodiazepines are defined as a group of CNS depressants which induces feelings of calm (anxiolysis), drowsiness and sleep. They act by facilitating the binding strength of the inhibitory neurotransmitter GABA at various GABA receptors throughout the CNS.

Generally, the benzodiazepines act by increasing the affinity of the GABA receptor for its ligand, thereby augmenting the inhibitory effect of a given concentration of GABA.

The anxiolytic effects of Benzodiazepines are believed to be mediated through Benzodiazepines receptors which are located in the limbic system, and myorelaxant properties are mediated through α2-containing receptors present in the spinal cord and motor neurons.

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Answer:

The answer may be A because that's what I believe

The statement is FALSE. Non-ferrous metals can be hardened by heat treatment, although the mechanisms and processes involved may differ from ferrous metals.

Heat treatment techniques such as precipitation hardening can be used to increase the strength of non-ferrous metals. Non-ferrous metals are metals or alloys that do not include iron (or iron allotropes, such as ferrite, etc.) in significant quantities. Non-ferrous metals are employed because they have desired qualities like reduced weight (for example, aluminium), greater conductivity (for example, copper), non-magnetic characteristics, or corrosion resistance (for example, zinc), even though they are often more expensive than ferrous metals. In the iron and steel sectors, several non-ferrous materials are also employed. Bauxite, for instance, is used as a flux in blast furnaces, whereas wolframite, pyrolusite, and chromite are utilised to create ferrous alloys.

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A negatively charged core nucleus and one or more orbiting electrons make up an atom. There may be the positively charged, somewhat massive protons and neutrons that make up the nucleus. Atoms are the basic building blocks of stuff.

In a neutral atom, there are exactly as many electrons as protons. The total number of protons and neutrons in the atom's nucleus is equal to the mass number (M) of the atom. The difference between the atomic number and the mass number of the atom (M) is equal to the amount of neutrons (Z).

Absorption is the process by which an atom transitions from its ground state to an excited state by absorbing energy from its environment. After absorbing the energy, the electron advances to a higher energy state. Up the opposite process, called emission, the electron releases the excess energy it had taken in and goes back to its ground state.

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Answer:

Option b which is n equal to 3

Answer:

80°F

Explanation:

Lukewarm means moderately warm. 80°C (176°F) water is extremely hot and could burn someone. 80°F (26 2/3°C) is moderately warm.

Answer:Intermolecular forces

Explanation:See in a molecule these intermolecular forces hold the atoms together which decides the rigidity of the material.

I hope the answer was helpful

The conclusion about the rates of the rotting reaction from the table would be that the reaction occurs more quickly when the concentration of salt is higher—option B.

The rate of reaction, or reaction rate, is the time it takes for a reaction to occur. In other words, it is the time it takes for the reactants of a reaction to become products.

In this case, the reactant is the rope and the product is the rotten product of the rope. From the table, it took 10 years for the rope to decay in a lake. On the other hand, it took the same rope just 4 years to decay in an ocean.

The difference between the two water bodies is the presence of salt. The lake has almost zero salt while the conentration of salt in the ocean water is high.

Thus, the conclusion about the rate of rotting reaction would be that the reaction is hastened by the presence of salt in the ocean water.

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Answer:

Explanation:

Answer:

HOPE ITS CLEAR. ☺️

Answer:

Explanation:

When an atom loses electron(s) it will lose some of its negative charge and so becomes positively charged. A positive ion is formed where an atom has more protons than electrons. In the opposite case when an atom gains electron(s) it becomes negatively charged (more electrons than protons)

and plzs do not hate

The charge of chromium after losing 4 electrons is +2.

Ions are two or more charged particles that make up ionic compounds. Electrostatic attraction keeps the ions together (in the solid phase) despite their opposing charges. Cations are positively charged ions, whereas anions are negatively charged ions. Many factors make ionic molecules significant.

They act as electrolytes for batteries and conduct electricity when dissolved in water. They could form a strong bond with other charged particles, such as those found in environmental samples or the human body. They find use in fireworks, flares, and lights because they are frequently multicolored when burned. The list is endless!

Studying the nomenclature used to give ionic compounds distinctive names is a good method to become familiar with and exposed to them. You will learn how to properly explain the identification of substances in language by converting from a chemical formula to a name—a highly essential problem as the diversity and complexity of known compounds keeps growing!

Therefore, the charge on chromium after losing 4 electrons is +2.

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