for which of the following mixtures will ag2so4(s) precipitate?

Answer:

c. 150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.40 M AgNO3(aq)

d. 150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.50 M AgNO3(aq)

Explanation:

Dissociation of Ag₂SO₄(s)    ⇄   2Ag⁺     +      SO₄²⁻

Solubility Product ;    = 

It is known that the solubility product    of Ag₂SO₄ = 1.2 × 10⁻⁵

If ionic concentration  <   ; precipitation will not occur

If  ionic concentration  >  ; precipitation will occur

Now, let’s pick the option one after the other to determine if precipitation occurs or not.

a).  

150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.20 M AgNO3(aq)

moles of Ag = 

= 0.001 moles

moles of  = 

= 0.015 moles

New total volume = 150.0 mL + 5.0 mL = 155 mL

= 0.155 L

Molar Concentration of Ag:

 = 

Molar Concentration of   

 = 

Ionic Concentration   =   

 × 

∴    <   ; therefore precipitation will not occur.

b)

150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.30 M AgNO3(aq)

moles of Ag = 

= 0.0015 mole

moles of  = 

= 0.015 moles

Molar Concentration of Ag:

 = 

Molar Concentration of   

 = 

Ionic Concentration   =   

∴    <   ; therefore precipitation will not occur.

c)

150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.40 M AgNO3(aq)

moles of Ag = 

= 0.002 moles

moles of  = 

= 0.015 moles

Molar Concentration of Ag:

 = 

Molar Concentration of   

 = 

Ionic Concentration   =   

∴    >   ; therefore precipitation will occur.

d)

150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.50 M AgNO3(aq)

moles of Ag = 

= 0.0025 moles

moles of  = 

= 0.015 moles

Molar Concentration of Ag:

 = 

Molar Concentration of   

 = 

Ionic Concentration   =   

∴    >   ; therefore precipitation will occur.

The mixture of Ag2SO4(s) that will precipitate:

c). 150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.40 M AgNO3(aq)

d). 150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.50 M AgNO3(aq)

Precipitation

This is known that Ag2SO4(s) dissociateds when:

(s)    ⇄    +  

The solubility  of   × 

Also,

The precipitation will take place only when:

  >  

so,

by measuring    of each of the given mixtures. we find that mixtures having  of   and  of 

and

mixture with   of   and  of  of  would precipitate.

Thus, options c and d are the correct answers.

Learn more about “Precipitation” here:

which interval for the graphed function contains the local maximum

Answer:

Local maximum = [3, 4]

Step-by-step explanation:

Step 1: Plot the given points [–1, 0] [1, 2] [2, 3] [3, 4] and draw the graph.

Step 2: Observe the graph, it is a straight line. Which has local minimum and local maximum at the closed interval.

Here with I have attached the graph.

The graphed function at local maximum at [3, 4]

Thank you.

The local maximum value of the function is in the interval of  and local maximum value of the function is in the interval of 

Further explanation:

Given:
The intervals are  and 

Explanation:
The given intervals are  and 

Plot the given points on the graph to obtain the local maximum value and the local minimum value in the given intervals.

The maximum value of the graphed function is 4 at 3.
The minimum value of the function is -1 at 0.

The local maximum value of the function is in the interval of  and local maximum value of the function is in the interval of 

Kindly refer to the imaged attached.

Learn more:
Learn more about inverse of the functionbrainly.com/question/1632445.
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Learn more about range and domain of the function brainly.com/question/3412497

Answer details:
Grade: High School
Subject: Mathematics
Chapter: Linear inequality

Keywords: interval, graphed, function, contains, local maximum, maximum, [-1,0], graphed function.

commas should always be placed around .

We put commas in nonrestrictive modifiers since these phrases or words are only added to present further information. This information is not essential to the sentence and removing it won’t have any effect on the thought. Thus, putting a comma will make it essentially a separate block of text from the whole sentence.

ANSWER: B. nonrestrictive modifiers

The answer is B. Non restrictive modifiers

which change of state is shown in the model

I believe the change of state shown in the model is deposition
Deposition is a process in which gases change phase and turns directly in solids without passing through the liquid phase. It is the opposite of sublimation.
One of the major difference between gases and solids is the distance between molecules; in gases the inter molecular spaces are large, while in solid they are very small, making solids be the most dense, with closely packed molecules. This is evident in the diagram, the phase changed from gases to solids. 

 is shown in the given model.

Further Explanation:

Condensation

The process by which a substance in its gaseous or vapor form is transformed into its liquid form is termed as condensation. It is just the reverse of evaporation. The random motion of gas particles is reduced and they come together to form a liquid. This is done by altering the temperature and pressure of the substance.

Deposition

The phase transition due to which a gas or vapor transforms directly into solid by not going through the liquid phase is termed as deposition. It is a thermodynamic process. This process occurs when water vapors release enough of its thermal energy and get converted into solids directly without passing through the liquid state. It is the opposite of what is done in the sublimation process and is therefore known as desublimation.

Boiling

The phase transition due to which gaseous or vapor state is formed from the liquid state is known as boiling. This takes place when a substance in its liquid state is heated to its boiling point.

Freezing

It is a process in which the substance gets converted from its liquid state to a solid state. It is just the reverse of melting. In this phase transition, heat is released from the substance and the liquid particles come closer to form solid. The formation of ice is an example of freezing.

In the given model, gaseous or vapor state is transformed into a solid state and this phase change occurs in case of deposition. Therefore deposition is shown in the given model.

Learn more:

  1. Identify the phase change in which crystal lattice is formed: brainly.com/question/1503216
  2. The main purpose of conducting experiments: brainly.com/question/5096428  

Answer details:

Grade: Senior School

Chapter: Phase transition

Subject: Chemistry

Keywords: deposition, freezing, boiling, solid, liquid, vapor, condensation, desublimation, thermodynamic process.

consequences of not applying for funding for your studies

Self-financing ones studies can be very burdensome because it means in many cases, working extra jobs to keep up. This certainly will create a work-life-study imbalance. Hence the need for Academic Funding.

Here are some of the consequences of not applying for funding

1. Poor Attendance of Lectures

2. Problems with enrollment status

3. In some cases, dropping out because one can no longer keep up

4. high emotional stress

5. bad academic performance etc.

One way to avoid the above is to simply apply for funding or a scholarship.

See the link below for more about Academic Funding:

consider the decomposition of a metal oxide to its elements, where m represents a generic metal.

The free energy change of the reaction is  9.40 kJ/mol. The equilibrium constant is  0.0225. The partial pressure of oxygen is 0.15 atm.

The equation is represented as follows;

M3O4 ( s ) ⇄ 3M ( s ) + 2O2 ( g )

The enthalpy change of the reaction is obtained using the relation;

ΔG∘rxn =  ΔGf∘products –  ΔGf∘reactants

ΔG∘rxn =[0 kJ/mol- 0kJ/mol] – (-9.40 kJ/mol)

ΔG∘rxn = 9.40 kJ/mol

Now;

ΔG∘ = -RTlnK

lnK = -ΔG∘/RT

K = e^-ΔG∘/RT

K = e^-(9.40 × 10^3J/mol/8.314 J/Kmol × 298 K)

K = 0.0225

Now;

K =(pO2)^2

pO2 = √K

pO2 =√ 0.0225

pO2 = 0.15 atm

Learn more: brainly.com/question/14281129

This is an incomplete question, here is a complete question.
Consider the decomposition of a metal oxide to its elements, where M represents a generic metal.

Substance      ΔG°f (kJ/mol)
M₃O₄                 -9.50
M(s)                       0
O₂(g)                     0
What is the standard change in Gibbs energy for the reaction, as written, in the forward direction? delta G°rxn = kJ / mol.
What is the equilibrium constant of this reaction, as written, in the forward direction at 298 K?
What is the equilibrium pressure of O₂(g) over M(s) at 298 K?
Answer :
The Gibbs energy of reaction is, 9.50 kJ/mol
The equilibrium constant of this reaction is, 0.0216
The equilibrium pressure of O₂(g) is, 0.147 atm
Explanation :
The given chemical reaction is:

First we have to calculate the Gibbs energy of reaction .


where,
 = Gibbs energy of reaction = ?
n = number of moles
Now put all the given values in this expression, we get:


The Gibbs energy of reaction is, 9.50 kJ/mol
Now we have to calculate the equilibrium constant of this reaction.
The relation between the equilibrium constant and standard Gibbs free energy is:

where,
 = standard Gibbs free energy  = 9.50kJ/mol = 9500 J/mol
R = gas constant = 8.314 J/K.mol
T = temperature = 298 K
K  = equilibrium constant = ?


The equilibrium constant of this reaction is, 0.0216
Now we have to calculate the equilibrium pressure of O₂(g).
The expression of equilibrium constant is:



The equilibrium pressure of O₂(g) is, 0.147 atm

what is the moment of inertia i of this assembly about the axis through which it is pivoted?

Answer:

I = 

Explanation:

The moment of inertia for the beam is:

I = 

Where  is the mass of the beam and L is the lengh of the beam

note:

L = 2x

And for particles I is equal to:

I = MR^2

where M is the mass of the particle and R is the distance between the pivot and the particle.

Finally, the moment of inertia for this assembly is the sum of the moment of inertia of the particles and the beam. So:

I = 

Answer:
The top answer is correct but it should be mr not mt
Explanation:

endangering other people on a highway while you are experiencing road rage is

Answer:

Aggressive driving has been a problem on our roadways for a while, and it seems to only be getting worse. Incidents of screaming, rude gestures, and sometimes even violence are reported frequently on our roadways to the point where it has earned its own name: road rage. Learn what causes road rage, whether you are prone to it, and how you can help to keep our roads safe by not giving in to road rage.

ano ang sulating pananaliksik

Ang pananaliksik ay isang sistematiko, kontrolado, emperilkal at kritikal na imbestigasyon ng mga proposisyong haypotetikal tungkiol sa inaakalang relasyon sa mge natural na pangyayari. Ito ay isang paraan ng paghahanap ng teorya, pagsubok so teorya, o paglutas ng isang suliranin. 

Ang pananaliksik ay nagpapayaman ng kaisipan ng isang mag-aaral. Lumalawak ang karanasan o eksperyenstan ng isang mananaliksik. Tataas ang respeto at tiwala sa sarili mag matagumpay and paggawa ng pananaliksik. Lulawak din o nadaragdagan ang kaalaman ng isang estudyante.

Ang sulating pananaliksik ay ang pagsulat gamit ang sistematikong paraan upang masagot ang mga katanungang siyentipiko. Mahalaga ang kasanayan sa pagsulat ng pananaliksik dahil dito ang magiging pinaka simpleng paraan upang higit na maintindihan ang mas komplikadong mga gawing pananaliksik.

which of these is not a responsibility of homeownership

Answer: Being a courteous neighbor

Explanation:

Homeownership simply means having a home by an individual. Some of the responsibilities of homeownership include paying taxes, paying water bills, cleaning gutters, making mortgage payments, keeping the home insured, keeping the home safe, home maintenance etc.

It should be noted that being a courteous neighbor is not a responsibility of a homeownership. Therefore, the correct option is A.