does a reaction occur when aqueous solutions of silver(i) acetate and potassium sulfide are combined?

Answer:

Na

Explanation:

Na Because it's exist in group 1

Answer:

la tabla de la derecha muestra una lista de los elementos ordenados por su energía de ionización. El elemento de mayor energía de ionización es el Helio, y el de menor el Cesio. La unidad de energía de ionización es el electrón voltio (eV).

Explanation:

2,2,4,4tetramethyl pentane

The wavelength of an electron can be calculated using the formula: wavelength = h / (mass of electron * velocity). Since kinetic energy is equal to the mass of the electron multiplied by the velocity squared, we can also calculate wavelength by using the formula: wavelength = h / sqrt(2mass of electron kinetic energy).

To convert the kinetic energies given in electron volts (eV) to Joules (J), you can use the formula: 1 eV = 1.6 x 10^-19 J

(a) 20.0 eV = 3.2 x 10^-18 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-18 J) = 2.4 x 10^-12 m or 2.4 pm (picometers)

(b) 200 eV = 3.2 x 10^-17 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-17 J) = 2.4 x 10^-11 m or 24 pm

(c) 2.00 keV = 3.2 x 10^-14 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-14 J) = 2.4 x 10^-8 m or 2.4 nm

(d) 20.0 keV = 3.2 x 10^-13 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-13 J) = 2.4 x 10^-7 m or 24 nm

(e) 0.200 MeV = 3.2 x 10^-11 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-11 J) = 2.4 x 10^-5 m or 0.24 nm

(f) 2.00 MeV = 3.2 x 10^-10 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-10 J) = 2.4 x 10^-4 m or 2.4 nm

A lower energy electron will have a longer wavelength, while a higher energy electron will have a shorter wavelength. To study the crystal structure of NaCl, you would need to use a technique such as X-ray diffraction, which typically uses X-rays with energies in the range of a few keV to a few tens of keV. Based on this, 2.00 keV and 20.0 keV energies are most suited for study of the NaCl crystal structure.

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Answer:  Hello!

first i believe we need a balanced equation to start...

i got 2H2 + 1O2 = 2H2O

This tells us that we need 2 moles of H2 for every 1 mole of O2 Since we only have 1 mole of H2 compared to the 5 moles of O2 hydrogen is the limiting reagent. For illustration, divide the balanced equation by 2 in order to get 1 mole of H2 If we start with 1.0 moles of H2 we'll produce 1.0 mole of H2O

Your welcome <3

Explanation:

Answer:

The Aufbau Principle

Explanation:

In the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy level before occupying higher-energy levels.

Answer:

Aufbau principle

Explanation:

edge 2021

Answer:

Autumn is one of the four basic seasons of the year in the temperate climate zone. It is characterized by moderate air temperatures with a decreasing daily average, and relatively high annual precipitation. The climate autumn is the period of the year in which the average daily air temperature ranges around 10° C.

Astronomical fall begins at the fall equinox and lasts until the winter solstice, which roughly means in the southern hemisphere between March 23 and June 22 (sometimes these dates are a day earlier or a day later, and in a leap year they may be additionally retracted one day). During astronomical autumn, the day time of the day is shorter than the night time, and moreover, with each successive day of the day it decreases and night increases.

Explanation:

We can assume that room temperature is 25 °C.

The melting point of a pure substance is the temperature at which it changes state from solid to liquid. The metling point of our substance is -187 °C. Since the room temperature is 25 °C we can say that it won't be solid. At least it will be liquid.

The boiling point of a pure substance is the temperature at which it changes state from liquid to gas. The boiling point of our substance is 42 °C. At room temperature we are under that temperature, so it won't convert into a gas. It will remain as a liquid also.

Since room temperature is between the boiling and melting point of our substance, the physical state is liquid.

Answer: liquid

Methane produced in the late 20th and early 21st centuries can be distinguished from ancient sources of methane by using isotopic analysis.

Methane is a simple hydrocarbon with the chemical formula CH4. It is a colorless, odorless gas that is the primary component of natural gas, which is used as a fuel source for heating, cooking, and electricity generation. Methane is also a potent greenhouse gas that contributes to global warming and climate change when released into the atmosphere.

Methane is formed through both natural and human activities. Natural sources of methane include microbial decomposition of organic matter in wetlands, oceans, and other environments. Human activities that produce methane include agriculture, livestock farming, coal mining, oil and gas production, and landfills.

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A plot of lnk vs. 1/T has a slope of -k k E a -Ea/R A. The pace of reaction increases as the concentrations of reactant molecules rise. The average kinetic energy of molecules increases as the reactant concentration rises, which is the best explanation for this occurrence.

Concentration in chemistry is calculated by dividing a constituent's abundance by the mixture's total volume. Mass concentration, molar concentration, number concentration, and volume concentration are four different categories of mathematical description.

According to the context, the term may or may not include ions that meet this requirement. A molecule is a collection of two or more atoms held together by attractive forces known as chemical bonds.

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To determine if the cell potential for the nonstandard cell is greater than, less than, or equal to the value calculated in part (b), we need to compare the two scenarios.

In part (b), the standard cell had 1.0 L of 1.0 M Cu(NO3)2 and 1.0 L of 1.0 M Zn(NO3)2. The concentrations of both Cu2+ and Zn2+ are the same in the half-cells.

In the nonstandard cell, the Cu2 half-cell has 0.50 L of 2.0 M Cu(NO3)2, which means the concentration of Cu2+ is doubled compared to the standard cell. However, the Zn2 half-cell remains the same with 1.0 L of 1.0 M Zn(NO3)2.

When the concentration of Cu2+ is increased in the Cu2 half-cell, it will shift the equilibrium of the cell reaction and affect the cell potential. Since the increased concentration of Cu2+ favors the reduction half-reaction (Cu2+ + 2e- → Cu), the cell potential of the nonstandard cell will be greater than the value calculated in part (b).

Therefore, the cell potential for the nonstandard cell is greater than the value calculated in part (b).

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Selecting resources with reliable credentials and expertise is important for any information we look up, on any topic.

The resources can be studied as reliable and credentials if they include the information that arises from an authentic source. And also, the resource that has been verified by many reviewers that exhibit special knowledge and expertise in the linked field of the topic can be contemplated as reliable and credential. That kind of resource can be looked upon for retrieving needed information on any topic.

It is important to evaluate our sources. When we do research, surely, we want to find the best information to support our ideas. This needs careful evaluation of the information we collect.

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Answer:

5

Explanation:

The properly balanced chemical equation for this is:

Pb(NO₃)₂ + H₂S → PbS + 2HNO₃

The coefficients in order are 1, 1, 1, and 2.

Therefore, 1+1+1+2=5

The sum of the coefficients added up is 5.

Answer:

The answer is chlorine

Explanation:

The correct classification for both calcium (Ca) and iron (Fe) is:

D) Ca is an alkaline earth element and a metal, and Fe is a transition element and a metal.

Calcium (Ca) belongs to the alkaline earth metals group, which is located in Group 2 of the periodic table. Alkaline earth metals are characterized by their reactivity, high melting points, and tendency to form 2+ cations. Therefore, Ca is classified as an alkaline earth element and a metal.

Iron (Fe) is a transition element, also known as a transition metal. Transition metals are located in the d-block of the periodic table and are characterized by their ability to form multiple oxidation states and exhibit variable valencies. Fe is classified as a transition element and a metal due to its properties and location in the periodic table.

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Answer: The ratio of mass of sulfur atom to mass of oxygen atom in sulfur dioxide is 1: 1.

Explanation:

Law of constant proportion states that In a chemical substance the elements are always present in definite proportions by mass. This law is also known as 'Law of definite proportions '.

Mass of 1 atom of sulphur = 32 g

Mass of 1 atom of oxygen = 16 g

Mass of 2 atoms of oxygen =\(16g\times 2=32g\)

In formation of \(SO_2\) , 1 atom of sulfur combines with 2 atoms of oxygen and thus the mass ratio will be 32: 32= 1:1 .

Thus the ratio of mass of sulfur atom to mass of oxygen atom in sulfur dioxide is 1: 1.

The amount of heat absorbed to raise the temperature of 435 grams of water at 1 atm from 25°C to its boiling point, 100°C, is approximately 1.4 × 10^5 joules

What is specific heat?

Specific heat is the amount of heat energy required to raise the temperature of a substance by one unit of temperature per unit of mass. It is a physical property that helps to characterize a substance and is typically measured in units of joules per gram per degree Celsius (J/g°C) or calories per gram per degree Celsius (cal/g°C).

The amount of heat absorbed to raise the temperature of a substance can be calculated using the formula:

Q = mcΔT

where Q is the amount of heat absorbed (in joules), m is the mass of the substance (in kilograms), c is the specific heat capacity of the substance (in joules per kilogram per degree Celsius), and ΔT is the change in temperature (in degrees Celsius).

Substituting the given values, we get:

m = 435 grams = 0.435 kg

ΔT = 100°C - 25°C = 75°C

The specific heat capacity of water is 4.184 J/g°C. We can convert this to joules per kilogram per degree Celsius (J/kg°C) by dividing by 1000:

c = 4.184 J/g°C ÷ 1000 = 4.184 J/kg°C

Substituting these values, we get:

Q = (0.435 kg) × (4.184 J/kg°C) × (75°C)

Q = 140,089.2 J

Therefore, the amount of heat absorbed to raise the temperature of 435 grams of water at 1 atm from 25°C to its boiling point, 100°C, is approximately 1.4 × 10^5 joules. The answer closest to this value is option (B).

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Water molecules are attracted to the molecules in the wall of the glass beaker. And since water molecules like to stick together, when the molecules touching the glass cling to it, other water molecules cling to the molecules touching the glass, forming the meniscus.

Every molecule has a shape. Some are shaped like the letter V, and some are trigonal. The shape of a molecule can be determined by the Valance Shell Electron Pair Repulsion Theory (VSEPR).

VSEPR theory is a theory that can describe the shape of electrons in three dimensions according to the repulsion of pairs of valence electrons and also free electrons.

This repulsion produces angles between the electrons that make up the molecule. VSEPR theory relies on the Lewis structure as the basis for determining lone and bond pairs. The repulsion of free electrons is greater than the repulsion between free electrons and bound electrons.

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When this new mixture is then filtered, the salt in the salty water solution passes through the filter paper to form the filtrate and the sand remains as the residue.

The process of mixtures

A mixture is composed of two or more types of matter that can be present in varying amounts and can be physically separated by using methods that use physical properties to separate the components of the mixture, such as evaporation, distillation, filtration and chromatography.

When water mixes with carbon dioxide, a substance called carbonic acid is formed. Carbonic acid is a weak acid that plays an important role in the carbon cycle. The carbon cycle is the process through which carbon moves from the atmosphere, to plants, then to animals, to the soil, and and back into the atmosphere.

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The IUPAC name of the compound is propanal and acetone.

Propanal is also called propanaldehyde, and it is an aldehyde which has one double bond and oxygen.

Acetone is a ketone. Ketones have functional group of R2CO.

Thus, the IUPAC name of the compound is propanal and acetone.

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Answer:Physical changes occur when matter changes its chemical property but not its nature. Water turning into ice is an example of a physical change. Baking soda powder reacting to vinegar is an example of a chemical change Remember! Physical change: Properties remain the same are____physichal_________________ . ______ ___________substances are formed. List 5 signs of chemical change: List 5 examples of physical change: ______________________ ______________________

Explanation:

i tried to answer the most because of my proofile page it seems like i am in high school but i am iin 6th grade

Answer:

The number electron in oxygen is equal to the number of proton. the symbol =O²- (negative charge electron).

Option c) NH4Cl will hydrolyze when dissolved in water.

Hydrolysis is a chemical reaction that occurs when a salt reacts with water, resulting in the formation of an acidic or basic solution. In this case, when NH4Cl (ammonium chloride) is dissolved in water, it undergoes hydrolysis.

The ammonium ion (NH4+) is the conjugate acid of ammonia (NH3), which is a weak base. When NH4Cl dissociates in water, the ammonium ion reacts with water to form NH3 and H3O+ (hydronium ion). This process is called hydrolysis.

NH4+ (aq) + H2O (l) ↔ NH3 (aq) + H3O+ (aq)

The formation of NH3 leads to an increase in the concentration of hydroxide ions (OH-) in the solution, making it slightly basic. At the same time, the presence of H3O+ ions makes the solution slightly acidic. Therefore, the hydrolysis of NH4Cl results in a slightly acidic and slightly basic solution.

In contrast, salts like NaCl and KCl do not undergo hydrolysis when dissolved in water because they consist of cations (Na+ and K+) and anions (Cl-) that do not react with water to form acidic or basic species.

Na2SO4 (sodium sulfate) is also an example of a salt that does not undergo hydrolysis. The sulfate ion (SO42-) does not react with water to form acidic or basic species, so the solution remains neutral.

Therefore, among the given options, only NH4Cl undergoes hydrolysis when dissolved in water.

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The question is incomplete. Find the full content below:

Which one of the following salts when dissolved in water will hydrolyse?

a) NaCl

b) KCl

c) NH4Cl

d)Na2SO4

The pressure of the gas inside the cylinder is 52.90 atm

Given is the number of moles of gas, the temperature and the volume of the gas and we need to find the pressure of the gas inside the cylinder, for this we can use the ideal gas law equation:

PV = nRT

Where:

P = Pressure of the gas (in units of pressure, such as atm)

V = Volume of the gas (in liters)

n = Number of moles of the gas

R = Ideal gas constant (0.0821 L·atm/(mol·K))

T = Temperature of the gas (in Kelvin)

First, let's convert the temperature from Celsius to Kelvin:

T = 25.0 °C + 273.15 = 298.15 K

Now we can substitute the values into the ideal gas law equation:

P × 12.5 L = 27.0 moles × 0.0821 L·atm/(mol·K) × 298.15 K

Simplifying the equation:

P × 12.5 L = 661.2587 L·atm

Dividing both sides by 12.5 L:

P = 661.2587 L·atm / 12.5 L

P ≈ 52.90 atm

Therefore, the pressure of the gas inside the cylinder is approximately 52.90 atm.

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We can use the ideal gas law equation to determine the pressure of a gas within a cylinder:

PV = nRT

Where:

P is the pressure of the gas (in units of pressure, such as atm)

V is the volume of the gas (in units of volume, such as liters)

n is the number of moles of the gas

R is the ideal gas constant (0.0821 L·atm/(mol·K))

T is the temperature of the gas (in units of temperature, such as Kelvin)

we need to convert the temperature from Celsius to Kelvin:

T(K) = T(°C) + 273.15

T(K) = 25.0 °C + 273.15

T(K) = 298.15 K

Now we can plug the data into the ideal gas law equation as follows:

P * 12.5 L = 27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K

Simplifying the equation:

P = (27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K) / 12.5 L

Calculating the pressure:

P ≈ 5.046 atm

As a result, the gas inside the cylinder is under a pressure of about 5.046 atm.

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Answer:

FeCl3 + 3NH4OH ---> Fe(OH)3 + 3NH4Cl

Explanation:

Just make sure that both sides are equal

FeCl3 + 3NH4OH ---> Fe(OH)3 + 3NH4Cl

Answer:

Explanation:

- 3 - 3

The flaw in the representation is likely the absence of an external source of energy, as indicated in (option C). The electrolytic cell requires an external energy supply to drive the thermodynamically unfavorable decomposition of NaCl into Na and Cl₂.

The flaw in the representation can be identified by analyzing the given options:

A. Oxidation is occurring at the anode.

This statement is correct in terms of the electrolytic cell setup. Oxidation does occur at the anode, where chloride ions (Cl-) are oxidized to form chlorine gas (Cl₂).

B. Molten Na is shown at the cathode.

This statement is also correct. In the electrolytic cell, sodium ions (Na+) are reduced at the cathode, resulting in the formation of molten sodium (Na).

C. An external source of energy is not shown.

This statement is the most likely flaw in the representation. The decomposition of NaCl into Na and Cl₂ is an endothermic process, meaning it requires an input of energy from an external source for the reaction to proceed. The representation should include an external power supply or energy source to drive the electrolytic cell.

D. The direction of the electron flow in the wires is incorrect.

Without more specific information or visual representation, it is difficult to determine if the direction of electron flow in the wires is incorrect. This option cannot be confirmed as a flaw based solely on the information provided.

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The complete hydrolysis of a protein produces a mixture of free amino acids.

Acids are molecules or ions that can donate protons, known as Bronsted-Lowry acids, or form covalent bonds with electron pairs, known as Lewis acids. The first category of acids is proton donors or Brønsted-Lowry acids.

No oil is either an acid or a base. Neutral. Oil is a neutral, nonpolar chemical. That is, it is a viscous liquid at room temperature. It is immiscible with water, but soluble in alcohol and ether. Whole eggs are relatively pH neutral, but egg whites are one of the few foods that are naturally alkaline, with an initial pH of as high as 7.6 when eggs are laid, but the alkalinity increases as eggs age and reach increases. the pH of 9.2.

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The limiting reactant will be Fe.

They are reactants that are available in limited quantities, as compared to other reactants, during the course of reactions.

From the equation of the reaction: \(4Fe + 3O_2 --- > 2Fe_2O_3\)

The mole ratio of Fe to O2 is 4:3.

Thus, for 0.25 mol Fe, 0.25 x 3/4 = 0.1875 mol of O2 is required.

With 0.5 mol of O2 available, it means oxygen is in excess while Fe is limited in availability.

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The limiting reactant from the calculations is Fe.

The limiting reactant is the reactant that is present in the least amount in solution. Now we have the equation as; 4Fe+ 3O2 → 2Fe2O3

If 4 moles of Fe reacts with 3 moles of O2

0.25 mol of Fe  reacts with  0.25 mol *  3 moles/4 moles

= 0.1875 moles of O2

It then follows that the limiting reactant is Fe.

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Answer: Kansas City Chiefs

Explanation: what ever you think.

The student with the correct statement is Arlo.

First, we shall determine the mole of sulphur in the jar. This can be obtained as follow:

Mole = mass / molar

Mole of sulphur = 16 / 32

Mole of sulphur = 1/2 mole

Finally, we shall determine the number of atoms in the jar. This can be obotained as follow:

From Avogadro's hypothesis,

1 mole of sulphur = 6.02×10²³ atoms

Therefore,

1/2 mole of sulphur = 1/2 × 6.02×10²³ atoms

1/2 mole of sulphur = 1/2 × Avogadro's number

Thus, the number of sulphur atom is 1/2 times Avogadro's number

Therefore, Arlo is correct.

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