Could someone please care to explain what the answer is

Could Someone Please Care To Explain What The Answer Is

Answers

Answer 1

Calculate the percentage composition of Ca(MnO4)2.

Firstly, we see how many atoms are there for each element in the formula.

Ca= 1 atom

Mn= 2 atoms

O= 8 atoms

Next, we are going to consult our periodic table for the atomic mass of each element.

Ca= 40

Mn= 55

O= 16

Then, we have to find the molar mass for the compound..

Here is the formula for calculating molar mass of an element:

Molar Mass= ( no. of atoms of the element × atomic mass of the element)

Now, we have to calculate the atomic mass of the compound. So using the molar mass formula for an element, we calculate the molar mass for each element then we sum up their molar masses to get the compounds molar mass.

Molar mass (Ca)= 1× 40

(Ca)= 40

Molar mass (Mn)=2×55

(Mn)= 110

Molar mass (O)= 8×16

(O)= 128

Now: Molar mass( compound)= (Ca)+(Mn)+(O)

= 40+ 110 128

= 278

This is everything we need to calculate our percentage composition for each element..

* The example says to find the percentage composition for Ca. So we only find for Ca, Which is already done using the formula and the answer is 14.39%.

To prove that your answer is correct, find the percentage composition for Mn and O as well. Then you add up their percentage compositions.

If you do and you get 100 as your answer, then your percentage compositions are correct.

Why don't you try finding the percentage composition for Mn and O, then add up all the three percentage compositions. If you 100 as their sum, then your percentage composition for each of the elements are correct.


Related Questions

Write the Kb expression for the reaction of propylamine, C3H7NH2 with water.
a. [C3H7NH+3][OH−][C3H7NH2]
b. [C3H7NH2][H2O][C3H7NH+3][OH−]
c. [C3H7NH2][C3H7NH+3][OH−]
d. [C3H7NH+3][OH−][C3H7NH2][H2O]

Answers

The Kb expression for the reaction of propylamine, C3H7NH2, with water is [C3H7NH2][C3H7NH+3][OH−] . Hence, option (c) is correct.

The Kb expression for the reaction of propylamine (C3H7NH2) with water can be determined by considering the equilibrium between the amine (C3H7NH2) and its conjugate acid (C3H7NH+3) with hydroxide ions (OH−) in water. The reaction can be represented as follows:

C3H7NH2 + H2O ⇌ C3H7NH+3 + OH−

The equilibrium constant expression for this reaction, Kb, is given by the product of the concentrations of the products (C3H7NH+3 and OH−) divided by the concentration of the reactant (C3H7NH2):

Kb = [C3H7NH+3][OH−] / [C3H7NH2]

Therefore, the correct Kb expression for the reaction is [C3H7NH2][C3H7NH+3][OH−] (option c).

The Kb expression for the reaction of propylamine, C3H7NH2, with water is [C3H7NH2][C3H7NH+3][OH−] (option c).

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What happens in a redox reaction?

Answers

Electrons are transferred from one reactant to another and the oxidation states/oxidation number of certain atoms are changed

Using standard heats of formation, calculate the standard enthalpy change for the following reaction. Fe(s) + 2HCl(aq)FeCl2(s) + H2(g) ANSWER: ___ kJ

Answers

The standard enthalpy change for the given reaction is approximately -156.87 kJ.

To calculate the standard enthalpy change (ΔH°) for the given reaction using standard heats of formation, the balanced equation for the reaction is:

Fe(s) + 2HCl(aq) → [tex]FeCl_2[/tex](s) + [tex]H_2[/tex](g)

The standard heats of formation (ΔH°f) for the compounds involved are as follows:

Fe(s): 0 kJ/mol

HCl(aq): -92.31 kJ/mol (source: NIST Chemistry WebBook)

[tex]FeCl_2[/tex](s): -341.49 kJ/mol (source: NIST Chemistry WebBook)

[tex]H_2[/tex](g): 0 kJ/mol

Now, let's calculate the standard enthalpy change (ΔH°):

ΔH° = Σ(ΔH°f products) - Σ(ΔH°f reactants)

ΔH° = [ΔH°f([tex]FeCl_2[/tex]) + ΔH°f([tex]H_2[/tex])] - [ΔH°f(Fe) + 2ΔH°f(HCl)]

ΔH° = [-341.49 kJ/mol + 0 kJ/mol] - [0 kJ/mol + 2(-92.31 kJ/mol)]

ΔH° = -341.49 kJ/mol + 2(92.31 kJ/mol)

ΔH° = -341.49 kJ/mol + 184.62 kJ/mol

ΔH° = -156.87 kJ/mol

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what is the mass of 2.31 x 10^23 formula units of SrF2?

Answers

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 40.51 g is the mass of 2.31x10²³ formula units of SrF[tex]_2[/tex].

What is mole?

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample.

Given number of atoms= 2.31x10²³atoms

we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number

mole =given number of atoms ÷ 6.022×10²³(Avogadro number)

Substituting the values

mole= 2.31x10²³÷ 6.022×10²³

mole = 0.38 moles of SrF[tex]_2[/tex]

mass of SrF[tex]_2[/tex]= moles of SrF[tex]_2[/tex] × Molar mass of SrF[tex]_2[/tex]

mass of SrF[tex]_2[/tex]= 0.38  × 106.6184

mass of SrF[tex]_2[/tex] = 40.51 g

Therefore, 40.51 g is the mass of 2.31x10²³ formula units of SrF[tex]_2[/tex].

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a sample of gas at 32.6 torr and 735 k is heated to 1035 k. what is the new pressure of the gas

Answers

The new pressure of the gas is [tex]45.906 torr.[/tex]

To calculate the new pressure:

[tex]P2 = P1 * (T2 / T1)[/tex]

where:

P1 is the initial pressure[tex](32.6 torr)[/tex]

T1 is the initial temperature [tex](735 K)[/tex]

P2 is the final pressure (unknown)

T2 is the final temperature [tex](1035 K)[/tex]

Substituting the values into the formula, we get:

[tex]P2 = 32.6 torr * (1035 K / 735 K)[/tex]

[tex]P2 = 45.906 torr[/tex]

Therefore, the new pressure of the gas is [tex]45.906 torr.[/tex]

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The conjugate pair for a strong base is -
O a strong base
O a weak acid
a strong acid
O a weak base

Answers

Weak acid is the answers

The atmosphere helps regulate Earth's temperature so that life can exist. It also provides the oxygen and carbon dioxide that organisms need
to live. Air is an important natural resource that forms part of the atmosphere. Which of these claims provides a main reason that air is an
important natural resource?
Air affects surface currents in the oceans.
Air gives animals and humans a means of transportation.
Air protects organisms from harmful radiation from the sun.
Air provides a way for harmful pollutants to move away from Earth.

Answers

Answer: it is an importtant resource because it is what keeps most things alive in earth.

Explanation:

2. Below is a chemical reaction in which two solutions are combined:
CdSO. (aq)+KS(aq) → CdS(s)+ K₂SO4(aq)
a) What does the (s) mean?
b) For the reactants, cadmium sulfate and potassium sulfide, write a chemical equation showing that each of these dissolve in water.
c) On the products side, potassium sulfate is aqueous and cadmium sulfide is solid. What is the difference? How can you observe this difference in the lab?
d) What is the name for this type of reaction?

Answers

The reaction between CdSO₄ and K₂S is a precipitation reaction where cadmium sulfide precipitates as a solid, while potassium sulfate remains in the aqueous form.

a) The "(s)" in the chemical equation CdS(s) represents that cadmium sulfide is a solid precipitate. It indicates that the product formed in the reaction is solid.

b) The chemical equation for the dissolution of cadmium sulfate (CdSO₄) in water is:

CdSO₄(s) → Cd²⁺(aq) + SO₄²⁻(aq)

The chemical equation for the dissolution of potassium sulfide (K₂S) in water is:

K₂S(s) → 2K⁺(aq) + S²⁻(aq)

c) The difference between potassium sulfate being aqueous (K₂SO₄(aq)) and cadmium sulfide being a solid (CdS(s)) lies in their solubility in water. Potassium sulfate is soluble in water, meaning it dissolves and dissociates into its respective ions (K⁺ and SO₄²⁻) in the solution. On the other hand, cadmium sulfide is insoluble in water and forms a solid precipitate, indicating that it does not dissolve but instead forms solid particles.

In the lab, the difference can be observed by visual inspection. When the reaction between CdSO₄ and K₂S takes place, a yellow precipitate of cadmium sulfide will form, indicating the presence of the solid. The potassium sulfate, being in an aqueous form, will remain dissolved and not form any visible solid.

d) The name for this type of reaction is a precipitation reaction or double displacement reaction. In this reaction, the ions from two compounds exchange to form an insoluble solid (precipitate) and a soluble compound.

In the given reaction between CdSO₄ and K₂S, cadmium sulfide (CdS) is the insoluble solid (precipitate), and potassium sulfate (K₂SO₄) is the soluble compound formed in solution.

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Which of the following is true about the coefficients in a balanced chemical equation?

Answers

Answer:

Where is the chemical equations?

A balanced equation obeys the law of conservation of mass. The coefficient represent the number of molecules in a chemical equation.

What is a balanced chemical equation?

An equation in which the number of reactants and products on the both sides of the reaction are equal can be defined as the balanced chemical equation. The coefficient are the numbers in front of the formula.

The coefficients are the numbers that must be added in front of the species involved in the reaction in order to balance it. It tells how many number of atoms or molecules are present in a reaction.

In the reaction N₂ + 3H₂ → 2NH₃ which is called Haber's process.

The coefficients are:

1 for Nitrogen molecule, 3 for Hydrogen molecule and 2 for the compound Ammonia.

Thus coefficients are numbers in front of each formula.

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How many grams is 0.02 moles of CuCl2​

Answers

Answer:

2.69g

Explanation:

The molar masses of

Cu = 63.5

Cl = 35.5

So the molar mass of [tex]CuCl_{2}[/tex] is 63.5 + (35.5 x 2) = 134.5

134.5 x 0.02 = 2.69g

calculate the percent by mass of a solution made from 17 g nacl (the solute) and 59 g water.

Answers

The percent by mass of the solution made from 17 g sodium chloride, NaCl (the solute) and 59 g water is 22.4%

How do i determine the percent by mass of the solution?

First, we shall obtain the mass of the solution. Details below:

Mass of NaCl = 17 gramsMass of water = 59 gramsMass of solution = ?

Mass of solution = Mass of NaCl + mass of water

Mass of solution = 17 + 59

Mass of solution = 76 grams

Finally, we shall determine the percent by mass of the solution. Details below:

Mass of NaCl = 17 gramsMass of solution = 76 gramsPercent by mass =?

Percent by mass = (mass of NaCl / mass of solution) × 100

= (17 / 76) × 100

= 22.4%

Thus, the percent by mass of the solution is 22.4%

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Heyy Friends Can Yall Plz Help

Answers

Student 3, since the chemical properties are determined by the number of the protons and the other answers are incorrect.

What is the standard free-energy change ΔG° at 25°C for the following reaction? H2(g) + Br2(l) → 2HBr(g) Calculate the value of the thermodynamic equilibrium constant K. ΔG°f (HBr(g)) = -53.50 kJ/mol ΔG° = ___ kJ K = ___

Answers

The standard free-energy change ΔG° at 25°C for the reaction H2(g) + Br2(l) → 2HBr(g) is -95.6 kJ/mol. The thermodynamic equilibrium constant K is 1.1 × 10^8.

To calculate ΔG°, we need to know the value of R and the temperature in Kelvin. The gas constant R is approximately 8.314 J/(mol·K), and to convert 25°C to Kelvin, we add 273.15 to the temperature, giving us 298.15 K. Plugging these values into the equation, we can solve for ΔG°.

Once we have the value of ΔG°, we can rearrange the equation ΔG° = -RT ln(K) to solve for K. Rearranging the equation gives us K = e^(-ΔG°/(RT)), where e is the base of the natural logarithm.

Therefore, in order to provide the specific value of ΔG° and calculate K, we need the standard free-energy change ΔG° at 25°C for the reaction H2(g) + Br2(l) → 2HBr(g).

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Write the formula of the coordination compound lithium pentacyanocobaltate(II). and Write the formula of the coordination compound pentaamminechlorocobalt(III) nitrate. Enclose the coordination complex in square brackets, even if there are no counter ions. Do not enclose a ligand in parentheses if it appears only once. Enter water as H2O

Answers

The formula of the coordination compound lithium pentacyanocobaltate(II) is [LiCo(CN)₅]²⁻.

What is lithium pentacyanocobaltate(II) ?

Pentacyanocobaltate attracted attention as an early example of a metal complex that reacts with hydrogen. It contains low-spin cobalt(II) with a doublet ground state.

Let's break down the formula to understand its components:

The central metal ion is cobalt (Co) in the +2 oxidation state, denoted as Co(II).

The ligands are pentacyanocobaltate, which means there are five cyanide ligands (CN⁻) bonded to the cobalt ion.

The coordination complex is negatively charged, with a charge of 2-, so it requires two lithium ions (Li⁺) as counter ions to balance the charge.

Therefore, the complete formula is [LiCo(CN)₅]²⁻, where the square brackets indicate the coordination complex and the superscript 2- indicates the charge.

The formula of the coordination compound pentaamminechlorocobalt(III) nitrate is [Co(NH₃)₅Cl]NO₃.

Breaking down the formula:

The central metal ion is cobalt (Co) in the +3 oxidation state, denoted as Co(III).

The ligands are pentaamminechlorocobalt, indicating there are five ammonia ligands (NH₃) and one chloride ligand (Cl⁻) bonded to the cobalt ion.

There is no need for any counter ions to balance the charge in this compound.

Thus, the complete formula is [Co(NH₃)₅Cl]NO₃, where the square brackets denote the coordination complex, and NO₃ indicates the presence of nitrate ions as the counter ions.

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preparing a given volume of a solution that has a specific molarity is a very important skill for a chemist. one step in that process is calculating the mass of solute required.
What mass of solute is required to produce 429.5 mL of a 0.256 M solution of KBr? _______ g KBr

Answers

13.1 g of KBr is required to produce 429.5 mL of a 0.256 M solution of KBr.

To calculate the mass of solute required to produce 429.5 mL of a 0.256 M solution of KBr, we can use the formula below;

Mass of solute = Molarity × Volume (liters) × Molecular weight of solute

We can also convert the volume of the solution from milliliters to liters by dividing by 1000.

Thus,429.5 mL = 429.5/1000 = 0.4295 Liters

Therefore,

Mass of KBr required = Molarity × Volume × Molecular weight of KBr= 0.256 mol/L × 0.4295 L × 119 g/mol= 13.1 g KBr

Thus, 13.1 g of KBr is required to produce 429.5 mL of a 0.256 M solution of KBr.

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0.29 pts each molecule of nitric acid has the formula hno3 . if there are 6000 oxygen atoms present and 6000 nitrogen atoms present, how many hydrogen atoms will be required to convert all of the oxygen atoms into nitric acid? select one:

Answers

The number of hydrogen atoms required to convert all of the oxygen atoms into nitric acid is 6000.

One molecule of nitric acid has a formula of HNO3, containing one nitrogen atom, one hydrogen atom, and three oxygen atoms. Therefore, if there are 6000 nitrogen atoms and 6000 oxygen atoms present, this means that there are 6000/3 = 2000 nitric acid molecules. Each nitric acid molecule has one hydrogen atom. Therefore, to convert all 6000 oxygen atoms into nitric acid, we need 3 times as many hydrogen atoms, which is 3 x 2000 = 6000 hydrogen atoms. This is because each molecule of nitric acid requires three oxygen atoms and one hydrogen atom.So, the number of hydrogen atoms required to convert all of the oxygen atoms into nitric acid is 6000.

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NEED ANSWER ASAP

You are asked to make 500. mL of a 0.250 M NaCl solution. How many moles of NaCl would you need?

Answers

.125 250M * 0.5L= .125

The moles of sodium chloride we need to make 500mL solution is 0.125 mole.

What is molarity?

Molarity of any solution tells about the concentration and it is define as the no. of moles of solute present in per liter of solution, and it is represented as:

M = n/V, where

M = molarity of given NaCl solution = 0.250M

V = volume of NaCl solution = 500mL = 0.5L

No we put these values on the above equation and calculate for n, we get:

n = (0.250M)(0.5L) = 0.125 mole

Hence, required moles of NaCl is 0.125 mole.

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How many molecules is 6.11 moles of Zn?

Answers

The answer is 0.015295197308045

We assume you are converting between moles Zinc and gram. You can view more details on each measurement unit: molecular weight of Zinc or grams The molecular formula for Zinc is Zn

why an indicator is a necessary part of the titration experiment?

Answers

Answer:

In a titration, you determine an unknown concentration of a sample by adding a second reactant of known concentration. In many titrations, you use a chemical called an indicator, which lets you know when the titration finishes.

Explanation:

consider a solution containing 1.82e-4 m lead(ii) nitrate and 2.25e-2 m sodium chloride. given that ksp of pbcl2 = 1.6 x 10-5, what is the value of qc?

Answers

The value of Qc for the given solution is approximately 3.67425e⁻⁶.

To find the value of Qc (the reaction quotient) for the given solution, we need to determine the concentrations of the respective ions and use them to calculate Qc.

The balanced equation for the dissolution of lead(II) chloride (PbCl₂) in water is:

PbCl₂(s) ⇌ Pb²⁺(aq) + 2Cl⁻(aq)

From this equation, we can see that one mole of PbCl₂ dissociates to yield one mole of Pb²⁺ ions and two moles of Cl⁻ ions.

Given that the concentration of lead(II) nitrate (Pb(NO₃)₂) is 1.82e⁻⁴ M and the concentration of sodium chloride (NaCl) is 2.25e⁻² M, we can use the stoichiometry of the balanced equation to determine the concentrations of Pb²⁺ and Cl⁻ ions.

Since lead(II) nitrate dissociates completely, the concentration of Pb²⁺ ions is equal to the concentration of lead(II) nitrate:

[Pb²⁺] = 1.82e⁻⁴ M

Sodium chloride dissociates into one mole of Na⁺ ions and one mole of Cl⁻ ions. Since we're interested in the concentration of Cl⁻ ions, we'll use the given concentration of NaCl to calculate it:

[Cl⁻] = 2 * 2.25e⁻² M

      = 4.5e⁻² M

Now, we can write the expression for Qc using the concentrations of the respective ions:

Qc = [Pb²⁺][Cl⁻]²

Putting in the values we obtained:

Qc = (1.82e⁻⁴ M)(4.5e⁻² M)²

   = 1.82e⁻⁴ (20.25e⁻⁴)

   = 36.7425e⁻⁸  

Simplifying the expression:

Qc = 3.67425e⁻⁶

Therefore, the value of Qc for the given solution is approximately 3.67425e⁻⁶.

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The increase in the rate of solvation with a rise in solvent temperature is mainly due to a(n)

a. increase in the activaton energy
b. increase in the movement of molecules leading to more collisions.
c. None of the above

Answers

The answer would be b

Which of the following is a nonelectrolyte in aqueous solution?
a) NH4F
b) NH4​Cl
c)NaHS
d)CH4
e)Na2S

Answers

The one which is a non-electrolyte in aqueous solution among the options is the compound (d) CH4 is the non-electrolyte in aqueous solution.

A non-electrolyte is a substance that does not dissociate into ions when dissolved in water, meaning it does not conduct electricity. In the case of the options provided:

a) NH4F: This compound dissociates into ammonium ions (NH4+) and fluoride ions (F-) in water, making it an electrolyte.

b) NH4Cl: This compound dissociates into ammonium ions (NH4+) and chloride ions (Cl-) in water, making it an electrolyte.

c) NaHS: This compound dissociates into sodium ions (Na+) and hydrogen sulfide ions (HS-) in water, making it an electrolyte.

d) CH4: Methane does not dissociate into ions in water and does not conduct electricity, making it a non-electrolyte.

e) Na2S: This compound dissociates into sodium ions (Na+) and sulfide ions (S2-) in water, making it an electrolyte.

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What do these two changes have in common? snails growing shells a slice of banana turning brown

Answers

Answer:

both are done due to the enviroment??

Which of the following ionic compounds will be more soluble in acid solution than in water?
O CuI
O PbCl2
O Fe(OH)3
O CaCO3

Answers

In comparison to the other ionic compounds, CaCO₃ is more soluble in acid solution.

Calcium carbonate (CaCO₃) is sparingly soluble in water. It undergoes a limited degree of dissociation and forms a weakly soluble salt.

However, when CaCO₃ is exposed to an acid solution, such as hydrochloric acid (HCl), it reacts to form a soluble salt, calcium chloride (CaCl₂), carbon dioxide (CO₂), and water (H2O). The following illustrates the reaction:

[tex]CaCO_3 + 2HCl \rightarrow CaCl_2+ CO_2 + H_2O[/tex]

Increased solubility of the CaCO₃ is the result of this reaction, which makes it easier for it to dissolve in an acidic solution as opposed to water.

Contrarily, the solubility of CuI (copper(I) iodide), PbCl₂ (lead(II) chloride), and Fe(OH)₃ (iron(III) hydroxide) in water and acid is limited and they are not greatly influenced by acid solutions.

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50 POINTS PLEASE ANSWER CORRECTLY
What happens to the momentum of two cars when they collide?

A. The total momentum after the collision increases.

B. The total momentum after the collision decreases.

C. The total momentum after the collision is equal to the total momentum before the collision.

D. The total momentum before and after the collision is not conserved.

Answers

Answer: I honestly think it might be C

Explanation: Collisions between objects are governed by laws of momentum and energy. When a collision occurs in an isolated system, the total momentum of the system of objects is conserved. ... In the collision between the two cars, total system momentum is conserved.

Answer: C. The total momentum after the collision is equal to the total momentum before the collision.

Hope this helps

Explanation: Collisions between objects are governed by laws of momentum and energy. When a collision occurs in an isolated system, the total momentum of the system of objects is conserved. ... In the collision between the two cars, total system momentum is conserved.

Which of Graphs 1 correctly represents the relationship between the pressure and volume of a gas?

Answers

Answer:

D

Explanation:

pressure is inversely proportional to gas volume

What variable represents thermal energy in the equation Q = mcΔT?
A.
The variable c
B.
The variable Q
C.
The variable T
D.
The variable m

Answers

Answer:

The variable Q

Explanation:

i just took the test and got it right.... i hope this helps :)

The variable Q represents thermal energy in the equation Q = mcΔT. Hence, option B is correct.

What is specific heat capacity?

The specific heat capacity is defined as the quantity of heat (J) absorbed per unit mass (kg) of the material when its temperature increases by 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C).

Q =  mcΔT

Q = heat energy

m = mass

c = specific heat capacity

ΔT = change in temperature

Hence, option B is correct.

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what is the difinition of the word democracy?​

Answers

a system of government by the whole population or all the eligible members of a state, typically through elected representatives.
"a system of parliamentary democracy"

a state governed under a system of democracy.
plural noun: democracies
"a multiparty democracy"
control of an organization or group by the majority of its members.
"the intended extension of industrial democracy"

Answer:

Democracy

/dɪˈmɒkrəsi/

--noun--

A system of government by the whole population or all the eligible members of a state, typically through elected representatives.

Identify which of the following functions are eigenfunctions of the operator d/dx: (a) eᶦᵏˣ, (b) cos kx, (c) k, (d) kx, (e) e⁻ᵃˣ^². Give the corresponding eigenvalue where appropriate.

Answers

Among the given functions, (a) e^ikx, (c) k, and (d) kx are eigenfunctions of the operator d/dx. The corresponding eigenvalues are (a) ik, (c) 0, and (d) k, respectively.

To determine whether a function is an eigenfunction of the operator d/dx, we need to check if applying d/dx to the function yields a scalar multiple of the original function.

(a) For the function e^ikx, we have d/dx(e^ikx) = ike^ikx. This shows that e^ikx is an eigenfunction of d/dx with an eigenvalue of ik.

(b) Taking the derivative of cos(kx) with respect to x gives us -ksin(kx), which is not proportional to the original function. Therefore, cos(kx) is not an eigenfunction of d/dx.

(c) For the constant function k, d/dx(k) = 0. This implies that k is an eigenfunction of d/dx with an eigenvalue of 0.

(d) The function kx has a derivative of d/dx(kx) = k. Hence, kx is an eigenfunction of d/dx with an eigenvalue of k.

(e) The derivative of e^(-ax^2) with respect to x is -2axe^(-ax^2). Since -2ax is not proportional to e^(-ax^2), e^(-ax^2) is not an eigenfunction of d/dx.

(a) e^ikx, (c) k, and (d) kx are eigenfunctions of d/dx, with corresponding eigenvalues of (a) ik, (c) 0, and (d) k, respectively. On the other hand, (b) cos(kx) and (e) e^(-ax^2) are not eigenfunctions of d/dx.

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3. A volume of gas at 1.65 atm was measured at 27°C and 343 mL. What will be the volume if the gas
is cooled to -12°C and the pressure is adjusted to 2.10 atm?

Answers

Answer:

Homework hint: P1V1 = nRT1 and V1, n, and R are constant. Remember to use Kelvin.

Other Questions
Ivanhoe Electric sold $5,160,000, 10%, 10-year bonds on January 1, 2022. The bonds were dated January 1, 2022, and paid interest annually on January 1. The bonds were sold at 98.Prepare the journal What is one of the main reasons writers like Thoreau use parallelism in their writing?A. )To catch the reader off guardB. )To make rhyming easierC. )To bring inanimate objects to lifeD. )To create strong rhythms "Pharma-C," a company that makes drugs, makes both over-the-counter and generic prescription drugs. The main office of Pharma-C is in the United States, but its parent company is based in Germany.In November 2021, 10,000 bottles of Pharma-cough C's children's medicine with a grape flavour were sent to different distributors and retailers. Pharma C found out on December 31, 2021, that 2,000 of the bottles had dosing cups that didn't have the correct 5 mL and 10 mL graduations. If the wrong dosing cup is used, a child could get too much medicine.This is a worry for Pharma-C. Pharma-C does not have to recall its children's cough medicine because of the wrong dosing cups.No one has sued Pharma-C for the bottles that were sent out. Pharma-C has voluntarily recalled the cough medicine for kids because the dosing cups had the wrong information on them. This could be unsafe.Pharma-C told the public about the recall on January 2, 2022. The recall is expected to cost $10,000. As a Certified Public Accountant, you were asked to help the accountant on the issue surrounding voluntary recall of the product .PLease note this is Crtitcal thinking case studyThe requirment is to use CPA Format/Rules. Write issues, Handbook Analysis which covers CPA standards - IFRS , Recomendations and Calculations. Evidence in the New Testament, references to the ruler, Herod, suggest thaA).Jesus was born around 8AD and died around 40AD.B). Jesus was born in 5AD and died around 42AD.C). Jesus was born in 2AD and died around 32AD.D). Jesus was born around 4AD and died around 30AD. a couple has two offspring; one child has an autosomal recessive disease trait and one is normal. what most likely conclusions can the nurse make about the parents? group of answer choices only one parent must have the autosomal recessive disease. both parents must always have the autosomal recessive disease. one parent is a carrier for the autosomal recessive gene and the other parent is normal. both parents could be carriers. The longer the duration, the lower the interest rate risk of a bond. O True O False Which happened second in the revolutions of Eastern Europe?1) Hungary voted to become a multiparty democracy. 2) Yugoslavia, home to several ethnic groups that hated each other, split into five nations. 3) Czechoslovakia split into the Czech Republic and Slovakia. 4) People began to climb over the "wall of shame. " The gross profit method of estimating ending inventory is not acceptable for: O insurance claims for destroyed inventory. O interim financial statements. O annual financial statements. O none of these answer choices are correct. Which of these items did the united starts export in the late 19th century?a. automobilesb. teac. bananasd. coffee A college school system finds that the 440-yard-dash times of its male students are normally distributed, with an average time of 70s and a standard deviation of 5.3s". If there were 40 runners, how many of them obtained a time of more than 67s? 2 points A. 27 runners B. 28 runners O C. 29 runners O D. 30 runners Identify and explain three potential barriers to marketing planning. Evaluate the benefits of marketing planning to business success. describe in as much detail as possible the object that holden chooses to write about stradlater's composition essay The list of individuals who composed material in the Psalms includes Moses.True/False Specify what type/types of "Whistle-blowing" is/are explained in the case study regarding the reaction of Allice the first-line manager in the Training and Development department of the bank? Need answer asap please. Will thumbs up. Suppose a uniform price monopoly has a demand curve given by p=12-q (& MR=12-2q) and total cost given by TC=2q (& MC=2) If this monopoly would be forced to behave like a competitive firm them the competitive price is $ and the firm will produce units O7,5 O 5,7 O 2,10 O 10,2 What is the difference between fundamental (traditional) and technical (quantitative) analysis? What do you think are the underlying assumptions made by technical strategies? There exists a unique license number for every driver born in California. Which one of the following logical sentences best represents the above statement? (Use x for drivers and y for numbers)*a.) y in natural's x in Californiab.) y in California x in natural'sc.) y in natural's x in Californiad.) x in California y in natural's Cristiano performs services for Ryan. Which of the following factors, if any, indicates that Cristiano is an independent contractor rather than an employee?a.Ryan provides the tools used.b.Cristiano follows a specific set of instructions from Ryan to complete tasks.c.Ryan sets the work schedule.d.Cristiano is paid based on tasks performed. Before starting this assignment, make sure you have read the Unit 1 chapters in your textbook, "Give Me Liberty!" View the films located below to answer each of their corresponding questions. Be concise with your answers and provide examples. Each answer should be between 100-130 words.Film: Slavery by Another NameQuestion: Describe the challenges for African Americans in the south. How did their lives change? type of development should dough have, when using dried fruits, nuts and cheeses?