Compare the solubility of silver iodide in each of the following aqueous solutions: rogressS Clear All 0.10 M AgCHCoo More soluble than in pure water. 0.10 M Nal Similar solubility as in pure water 0.10 M NH4CH3COO Less soluble than in pure water. 0.10 M KNO3 Submit Answer Retry Entire Group more group attempts remaining

The concentration of the original solution was  0.400 M.

What is an aqueous ethanol solution?

An aqueous ethanol solution is an alcoholic liquid composed of two or more components, one of which is water and the other is ethanol. It is a type of homogeneous mixture which has a constant composition throughout its entire volume.

Calculate the volume of the original solution.

Volume of original solution = 4.00 L - 400 mL = 3.60 L

Calculate the molarity of the original solution.

Molarity of original solution = (0.0400 M) x (3.60 L / 4.00 L) = 0.0400 M x 0.9 = 0.400 M

What is Dilution?

Dilution is the process of reducing the concentration of a solution by adding more solvent. It is commonly used in chemistry and biology to make a concentrated solution less concentrated, or to dilute a concentrated solution to make it more concentrated. It can also refer to the addition of a new solution to an existing solution to reduce the concentration of a certain component.

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the molecular formula of the compound is (CH₂)₈, which simplifies to C₈H₁₆.

the molecular formula of a compound given its molar mass and empirical formula, we need to determine the factor by which the empirical formula must be multiplied to get the molecular formula.

The empirical formula CH₂ has a molar mass of approximately 14 (12 from C + 2 from H).

The factor by which we need to multiply the empirical formula to get the molar mass of 112 is 8 (112 /14 = 8).

The most straightforward whole-number ratio of the atoms in a compound is its empirical formula. In order to arrive at the smallest ratio possible, the subscripts in the chemical formula are divided by their greatest common factor.

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Answer:

0.382 moles of oxygen are produced.

Explanation:

Given data:

Number of moles of oxygen produced = ?

Number of moles of N₂O₅ react = 0.7631 mol

Solution:

Chemical equation:

2N₂O₅      →      4NO₂ + O₂

Now we will compare the moles of O₂ with N₂O₅ .

                    N₂O₅       :          O₂

                        2         :            1

                  0.7631      ;          1/2×0.7631 = 0.382

0.382 moles of oxygen are produced.

The modern periodic law states that the physical and chemical properties of the elements are periodic functions of their atomic numbers. The elements are arranged in the increasing order of their atomic numbers.

Here the element Lithium is a alkali metal which is located in the group 1 of the periodic table and placed in the second period. Its atomic number is 3. Alkali metals are highly electropositive and are good reducing agents.

Lithium reacts with the elements of groups 16 and 17 and form compounds, they also burn in oxygen and react with water.

The reaction of lithium with water is:

2Li + 2H₂O → 2LiOH + H₂

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Answer:

They're too small

Explanation:

Atoms are smaller than the wavelength of visible light

Answer:

too small

Explanation:

The process of intermingling of the ions (molecules) of one substance into another is called diffusion.

Equilibrium refers to a state of balance or stability, and can apply to various chemical or physical processes where the rates of opposing reactions or forces are equal.

Ionization refers to the process of forming ions from neutral atoms or molecules, typically by the gain or loss of electrons.

Dissociation refers to the separation of a molecule into smaller particles, such as ions or atoms, typically through a chemical reaction.

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Answer: a saline hope this helps have a good day please give me brainliest:)

Explanation:

The new volume will be 10.41 L.

P₁V₁ = P₂V₂ , where

P₁V₁ = Volume and the pressure of the gas at initial stage
P₂V₂ = Volume and the pressure of the gas at final stage

To get V₂, rearrange the equation,
V₂ = P₁/P₂ * V₁
     = 81.3 kPa / 16.4 kPa * 2.1 L
     = 10.41 L


The frequency and force of the collisions between the gas molecules and the container walls determine the gas pressure. Because the molecules are travelling with the same average kinetic energy, they must collide with the container walls less frequently.

The only way to do this is to increase the volume. Boyle's Law states that pressure and volume have an inverse relationship when temperature and the number of moles are held constant. This results from the requirement that the volume-pressure product remain constant during this process.

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Number of moles present in H₂O is measured as 0.3555 moles and moles of  CBr₄ is 1.24 moles

mole of any substance = 1 avogadro's number = 6.023 x 10²³ molecules

1) No.of moles of H₂O

                           = 6.4/18

                         = 0.3555 moles

no. of molecules in 0.3555 moles of water

                    = 0.3555 x 6.023 x 10²³

                          = 2.14x 10²³ molecules of H₂O

2) no.of moles of CBr₄

                           = 412/331.63

                                 = 1.24 moles

no. of molecules present in 1.24 moles of CBr₄ = 1.24 x 6.023 x 10²³ =                7.48 x 10²³ molecules

3) no. of moles of O₂

                           = 20.5/32

                          = 0.6406 moles

no. of molecules present in 0.6406 moles of O₂

                         = 0.6406 x 6.023 x 10²³

                           = 3.86 x 10²³ molecules

4) no. of moles of C₈H₁₀

                            = 20.4/106.16

                            = 0.1921 moles

molecules present in 0.1921 moles of O₂

                                   = 0.1921 x 6.023 x 10²³

                                  = 1.16 x 10²³ molecules

A substance's mole is equivalent to 6.022 × 10²³ units, such as atoms, molecules, or ions. The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's steady. The idea of the mole can be utilized to change over among mass and number of particles..

One of chemistry's fundamental constants is the Avogadro number. When a similar number of atoms or molecules are being compared, it makes it possible to compare the various atoms or molecules of a given substance.

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Answer:

Moving water and blowing winds are major factors that impact the appearance of our planet by causing weathering and erosion.

Explanation:

Waves and winds pounding against rock and sand break down the materials in a process called weathering and move them away in a process called erosion, resulting in a changing landscape.

Answer:

Mainly water and salt. That can be ocean water blowing or road salt.

Electrolysis performed on the given mixture produces silver (Ag), at the cathode.

In an electrolysis reaction involving a mixture of CuBr (l), AgBr (l), MgBr2 (l), and NiBr2 (l), the product formed at the cathode will depend on the reduction potentials of the involved species. The cathode is where the reduction reactions take place, and the element with the highest reduction potential will be preferentially reduced.

Comparing the reduction potentials of the metals in the given compounds, we find the following values:

- Cu: +0.34 V

- Ag: +0.80 V

- Mg: -2.37 V

- Ni: -0.23 V

The element with the highest reduction potential is silver (Ag), with a value of +0.80 V.

Therefore, during the electrolysis of the given mixture, silver (Ag) will be preferentially reduced and produced at the cathode. This is because the higher the reduction potential, the more likely the element is to gain electrons and undergo reduction.

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The correct answer is C, pOH=14−pH.

In pure water, the concentration of H+ ions is equal to the concentration of OH- ions, which means that the pH and pOH of pure water are equal at 7. At higher temperatures, some of the water molecules ionize into H+ and OH- ions, causing the pH to decrease and the pOH to increase.

Since the measured pH at 50°C is 6.6, we can calculate the pOH using the equation:

pH + pOH = 14

pOH = 14 - pH

Substituting the measured pH of 6.6 into the equation gives:

pOH = 14 - 6.6 = 7.4

Therefore, the correct answer is C, pOH=14−pH.

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The statement “the yeast engages in photosynthesis, which produces oxygen gas” is incorrect. Yeast cells do not engage in photosynthesis to produce oxygen gas.

Photosynthesis is the process by which green plants use sunlight, carbon dioxide, and water to produce glucose (a simple sugar), which serves as food for the plant.

Oxygen is also produced during photosynthesis.Yeast:Yeast is a unicellular fungus that converts sugar into carbon dioxide and alcohol. Yeast cells respire aerobically in the presence of oxygen and anaerobically in the absence of oxygen.

However, yeast cells do not perform photosynthesis. They do not have chloroplasts or pigments that are required for photosynthesis. Therefore, yeast cells cannot produce oxygen gas.Bio quizlet:Quizlet is an online learning platform that allows users to create and share flashcards, study guides, and quizzes.

It is a great resource for studying biology and other subjects. Students can create their own study materials or use existing ones created by other users. Quizlet provides an engaging and interactive way to learn and retain information.

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Answer:

Protons:

- positive

- aka cation

- in the nucleus along with the neutrons

Electrons:

- negative

- aka anion

- situated in the orbital shells/configuration levels (there are many names)

Answer:

chemical energy is the energy of a chemical substance that is stored in the bonds of chemical compounds and is released when they undergo a chemical reaction and transform into another substance

Answer:

I think it is A

Explanation:

A.They study how to make plants produce certain chemicals

To achieve a final concentration of 5 mM magnesium sulfate in 500 mL of media, you should add 2.5 mL of 1 M magnesium sulfate solution to the vial.


To calculate the amount of magnesium sulfate solution to add to the vial, you first need to know the concentration of the stock solution that you have on hand. Assuming you have a 1 M (molar) solution of magnesium sulfate, you can use the following formula:

C1V1 = C2V2

where C1 is the initial concentration of the solution (1 M), V1 is the volume of the solution added (unknown), C2 is the desired final concentration (5 mM or 0.005 M), and V2 is the final volume (500 mL or 0.5 L).

Rearranging the formula to solve for V1, we get:

V1 = (C2V2) / C1

Plugging in the values, we get:

V1 = (0.005 M x 0.5 L) / 1 M

V1 = 0.0025 L or 2.5 mL

Therefore, to achieve a final concentration of 5 mM magnesium sulfate in 500 mL of media, you should add 2.5 mL of 1 M magnesium sulfate solution to the vial.

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Answer:

Hi, there the answer is

A)extrusion

Explanation:

The feature that causes a gap in the geologic record is called extrusion.

Sometimes magma can force itself through a crack or fault in the rock at the Earth's surface. It pours out over the Earth's surface in a volcanic eruption. This process is called extrusion. The rocks that form from extruded magma are called extrusive igneous rocks.

Direct Extrusion, Indirect Extrusion, Hydrostatic Extrusion and Lateral or Vertical Extrusion are some types of extrusion.

Lava that hardens on the surface is called an extrusion. The rock layers below an extrusion are always older than the extrusion. Beneath the surface, magma may push into bodies of rock. There, the magma cools and hardens into a mass of igneous rock called an intrusion.

Therefore, The feature that causes a gap in the geologic record is called extrusion.

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Answer:

Soap

Explanation:

It holds true. Orbitals are still a molecular orbitals cloud of charge density, which means that the protons are dispersed across a wide area as opposed to someone being centralized in a single place.

Each subshell's electrons are organized into orbitals, which are areas of the atom's interior where a certain electron is still most likely to be. There are two electrons in each orbital, and their spins vary. An electron in a certain subshell can be located in an atom's orbital, an area of space.

Any atom typically contains a large number of orbitals for each n value and these orbitals are collectively referred to as electron shells.

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Answer:

The number of protons

Explanation:

Answer:

number of negative electric charger

explanation

(the electrons ) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral .

The amount of heat required is 19219.2 J

Mass = mole × molar mass

Mass of nitrogen = 3 × 28

Mass of nitrogen = 84 g

Q = MCΔT

Q = 84 × 1.040 × 220

Q = 19219.2 J

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The solubility of silver iodide in molar form is 1.2 108 M.

Silver iodide dissolves in water at a rate of 9.1 109 M, or mol/L. This indicates that silver iodide doesn't dissociate very much, according to a physical interpretation. Ksp is constant for a saturated solution of a particular substance at a given temperature (van't Hoff equation).

Ksp = [Silver ion][Iodine ion]

Let x represent Silver Iodide's molar solubility.

At equilibrium, the concentration of Silver ion ions and Iodine ion ions will both be x.

Therefore, we can write:

Ksp = x²

Solving for x, we get:

x = √(Ksp) = √(1.5 × 10⁻¹⁶) = 1.2 × 10⁻⁸ M

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The given statement "the physical state of a reactant or product will affect the enthalpy of reaction in a thermochemical equation," is false.

The heat of reaction is influenced by the physical state of the reactants and products.

The term "thermochemical equation" refers to a balanced chemical equation that not only specifies the quantities of the various reactants and products but also the quantity of heat generated or absorbed.

A thermochemical equation may be written using fractional coefficients.

H2 ( g ) + ½ O2 ( g ) ⇒H2O ( l ) +285.8 KJ mol-1

H2 ( g ) + ½ O2 ( g ) ⇒ H2O ( l )  ΔH = – 285.8 KJ mol-1

When 1 mole of hydrogen and 0.5 mole of oxygen react, 285.8 KJ mol-1 of heat is produced. The heat generated will also double if the reactant amounts are doubled.

2H2 ( g ) + O2 ( g ) → 2 H2O ( l ) + 571.6 KJ mol-1

2H2 ( g ) + O2 ( g ) → 2H2O ( l ) ,ΔH = – 571.6 KJ mol-1

The heat of reaction, enthalpy of reaction, or enthalpy change of reaction is the quantity of heat that is evolved or absorbed in a chemical reaction once the number of moles of reactants as represented by the chemical equation have completely reacted.

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thank youuuuu :)

thank means a great honour of joy and peace have a good day

The energy required to ionize a hydrogen atom is 0.544 electronvolts (eV).

What is ionization energy?

Ionization energy, also known as ionization potential, is the amount of energy required to remove an electron from an atom or a positively charged ion. It is the minimum energy necessary to completely remove an electron from its orbital and create a positively charged ion.

To determine the energy required to ionize a hydrogen atom when its electron is in the n=5 state, we need to find the energy difference between the n=5 energy level and the ionization energy level, where the electron is completely removed from the atom.

The ionization energy of a hydrogen atom can be calculated using the formula:

Ionization Energy = \(\frac{-13.6 eV }{n^2}\)

Where n is the principal quantum number of the energy level.

For the n=5 energy level, the ionization energy would be:

Ionization Energy = \(\frac{-13.6 eV}{5^2}\)

Ionization Energy =\(\frac{ -13.6 eV}{25}\)

Ionization Energy = -0.544 eV

Since the energy values are typically expressed as positive values, we can take the absolute value of the result:

Ionization Energy = |-0.544 eV|

Ionization Energy = 0.544 eV

Therefore, the energy required to ionize a hydrogen atom when its electron is in the n=5 state is 0.544 electronvolts (eV).

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Heat change, ΔH, required to change 52.2 grams of liquid water into steam from room temperature (25 Celsius) to 115 Celsius is 135915.228 J.

The heat change required to change 52.2 grams of liquid water into steam from room temperature (25 Celsius) to 115 Celsius is determined as follows:

Heat change required, ΔH = ΔH₁ + ΔH₂ + ΔH₃

ΔH₁ is heat required to change liquid water at 25°C to water at 100°C

ΔH₁ = mass * specific heat capacity * temperature change

specific heat capacity of water = 4.184 J/g/K

ΔH₁ = 52.2 * 4.184 * (100 - 25)

ΔH₁ = 16380.36 J

ΔH₂ is the heat required to convert water at 100°C to steam at 100°C

ΔH₂ = mass * latent heat of vaporization of water

latent heat of vaporization of water = 2260 J/g

ΔH₂ = 52.2 * 2260

ΔH₂ = 117972 J

ΔH₃ is the heat required to change steam at 100°C to water at 115°C

ΔH₁ = mass * specific heat capacity * temperature change

specific heat capacity of steam = 1.996 J/g/K

ΔH₁ = 52.2 * 1.996 * (115 - 100)

ΔH₁ = 1562.868 J

Heat change required, ΔH = 16380.36 J + 117972 J + 1562.868 J

Heat change required, ΔH = 135915.228 J

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Answer:

iodine

Explanation:

The binding energy per nucleon for 235U and 137Cs is 7.6 MeV and 8.39 MeV.

The minimal amount of energy needed to take a particle out of a system of particles or to break a system of particles down into its component pieces is known as binding energy (BE).

Given nucleus = 235 U and nucleon = 137 Cs.

a) The expression to find BE of 235 U is written as 235U92.

Atomic number (Z) = 92 = number of protons

Mass number (A) = 235 (number of protons + neutrons)

Number of electrons = 235-92 = 143.

Mass of neutron (mₙ) =  1.00866 u

Mass of proton (\(m_H\)) = 1.00783 u

The binding energy for the nucleus is calculated using the below formula,

\(B = (Zm_H + Nm_n- m_{atom})\times\mathrm{931.49\;MeV/u}\)

For 235U,

\(\begin{aligned}BE&=[(92\times1.00783 u)+(143\times1.00866 u)-235](\mathrm{931.49\;MeV/u})\\&=\mathrm{1783.8\;MeV}\end{aligned}\)

The BE per nucleon is given by,

\(\begin{aligned}\text{BE per nucleon}&=\frac{\text{total BE of nucleus}}{\text{number of nucleon}}\\&=\frac{1783.8}{235}\\&=\mathrm{7.6\;MeV}\end{aligned}\)

b) The expression to find BE of 137Cs is written as 137Cs55.

Atomic number (Z) = 55 = number of protons

Mass number (A) = 137 (number of protons + neutrons)

Number of electrons = 137-55 = 82.

Mass of neutron (mₙ) =  1.00866 u

Mass of proton (\(m_H\)) = 1.00783 u

The atomic mass of Cs = 137u

For 137Cs,

\(\begin{aligned}BE&=[(55\times1.00783 u)+(82\times1.00866 u)-137](\mathrm{931.49\;MeV/u})\\&=\mathrm{1149.3\;MeV}\end{aligned}\)

The BE per nucleon is given by,

\(\begin{aligned}\text{BE per nucleon}&=\frac{\text{total BE of nucleus}}{\text{number of nucleon}}\\&=\frac{1149.3}{137}\\&=\mathrm{8.39\;MeV}\end{aligned}\)

The answers are 7.6 MeV and 8.39 MeV.

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