Be sure to answer all parts. Three 8−L flasks, fixed with pressure gauges and small valves, each contain 4 g of gas at 276 K. Flask A contains He, flask B contains CH4, and flask C contains H2. Rank the flask contents in terms of:

Answers

Answer 1

Here is the complete question.

Be sure to answer all parts. Three 8−L flasks, fixed with pressure gauges and small valves, each contain 4 g of gas at 276 K. Flask A contains He, flask B contains CH4, and flask C contains H2. Rank the flask contents in terms of: the following properties. (Use the notation >, <, or =, for example B=C>A.)

(a) pressure

(b) average molecular kinetic energy

(d) total kinetic energy of the molecules

Answer:

Explanation:

Given that:

Three flask A,B, C:

contains a volume of 8-L

mass m = 4g &;

Temperature = 276 K

Flask A = He

Flask B = H₂

Flask C = CH₄

a) From the ideal gas equation:

PV = nRT

where;

n = number of moles = mass (m)/molar mass (mm)

Then:

PV = m/mm RT

If T ,m and V are constant for the three flasks ; then

P ∝ 1/mm

As such ; the smaller the molar mass the larger the pressure.

Now; since the molecular weight of CH₄ is greater than He and H₂ and also between He and H₂, He has an higher molecular weight .

Then the order of pressure in the flask is :

[tex]\mathbf{P_B >P_A>P_C}[/tex]

where :

[tex]P_A[/tex] = pressure in the flask A

[tex]P_B[/tex] = pressure in the flask B

[tex]P_C[/tex]= Pressure in the flask C

average molecular kinetic energy

We all know that the average molecular kinetic energy varies directly proportional to the temperature.

Thus; the given temperature = 276 K

∴ The order of the average molecular kinetic energy is [tex]\mathbf{K.E_A =K.E_B =K.E_C}[/tex]

The rate of diffusion of gas is inversely proportional to the square root of it density . Here the density is given in relation to their molar mass.

So;

rate of diffusion ∝ [tex]\dfrac{1}{\sqrt{mm} }[/tex]

where;

[tex]D_A[/tex] = rate of diffusion in flask A

[tex]D_B[/tex] = rate of diffusion in flask B

[tex]D_C[/tex] = rate of diffusion in flask C

Thus; the order of the rate of diffusion = [tex]D_B[/tex] > [tex]D_A[/tex] > [tex]D_C[/tex]

d) total kinetic energy of the molecules .

The kinetic energy deals with how the speed of particles of a substance determines how fast the substances will diffuse in a given set of condition.

The the order of the total kinetic energy depends on the molecular speed

Thus; the order of the total kinetic energy for the three flask is as follows:

[tex]\mathbf{ K.E_B>K.E_A>K.E_C}[/tex]

Related Questions

Which of the following would be more reactive than magnesium (Mg)?
A. Calcium (Ca)
B. Potassium (K)
C. Argon (Ar)
D. Beryllium (Be)

Answers

Answer:potassium is more reactive than Mg because both lie in the same group and the element potassium has more electropositivity than magnesium

Explanation:

I hope it will help you

Answer: B. Potassium(K)

Explanation:

A piece of wood near a fire is at 23°C. It gains 1,160 joules of heat from the fire and reaches a temperature of 42°C. The specific heat capacity of
wood is 1.716 joules/gram degree Celsius. What is the mass of the piece of wood?
ОА. 16 g
OB. 29 g
ОC. 36 g
OD. 61 g

Answers

Answer:

35.578g or 36g if you round

Explanation:

Q=mc ∆∅ where ∅ is temperature difference

1160= m x 1.716 x (42-23)

m = 1160/ 1.716 x19

m=35.578g

m = 36g to nearest whole number

Answer: C. 36 g

Explanation: I got this right on Edmentum.

What is the net ionic equation of the reaction of MgSO4 with Ba(NO3)2 ?

Answers

Answer:

Ba(+2)(aq) + SO4(-2)(aq) -----> BaSO4(s)

Explanation:

Take a look at the attachment below;

Give the characteristic of a zero order reaction having only one reactant. a. The rate of the reaction is not proportional to the concentration of the reactant. b. The rate of the reaction is proportional to the square of the concentration of the reactant. c. The rate of the reaction is proportional to the square root of the concentration of the reactant. d. The rate of the reaction is proportional to the natural logarithm of t

Answers

Answer:

a. The rate of the reaction is not proportional to the concentration of the reactant.

Explanation:

The rate expression for a zero order reaction is given as;

A → Product

Rate = k[A]⁰

[A]⁰ = 1

Rate = K

GGoing through the options;

a) This is correct because in the final form of the rate expression, the rate is independent of the concentration.

b) This option is wrong

c) This option is also wrong

d) Like options b and c this is also wrong becaus ethere is no relationship between either the concentration or t.

Other Questions

the declaration of independence provides for freedom of the press.-true -false What is the sum of 2x^2-x and -x-2x^2-2 Which factors affect the rate of photosynthesis select all that apply Which of the following molecules are used by heterotrophs as primary sources of free energy?A. Proteins, carbohydrates, and nucleic acidsB. Carbohydrates, lipids, and proteinsC. Nucleic acids, lipids, and carbohydratesD. Lipids, nucleic acids, and proteins when their center-to-center separation is 50 cm. The spheres are then connected by a thin conducting wire. When the wire is removed, the spheres repel each other with an electrostatic force of 0.2525 N. What were the initial charges on the spheres Summarizing Central Ideas in The Dark Game, Part 1Instruction ActiveIdentifying the Central IdeaTytWhat is the central idea of the paragraph?Another thing that changed very little in the yearsbetween the wars was the means of obtaining militaryintelligence. Although the use of photography and thetelegraph brought some technological advances, the craftof spying on the enemy's army still relied on fieldwork.For the most part, intelligence was gathered in simpleways. Prisoners of war and deserters were interrogated,The Union army was always interested in hearing whatrunaway slaves had to report.-The Dark Game,Paul JaneczkoTechnological advances made a difference in thecraft of spyingInterrogations are an important way to obtaininformationThe Union army gathered stories from runawayslaves,Intelligence was often gathered in simple ways,such as relying on fieldworkPrevious ActivityUSIS A change made by General Joseph H. as new commander of the union army was to: How did the growth of the railroads affect supply and demand for natural resources in the United StThe growth of the railroads decreased the supply of natural resources.The growth of the railroads decreased the demand for natural resources.The growth of the railroads increased the demand for natural resources.The growth of the railroads had no effect on the supply of natural resources. write the steps you would use for making tea.use the words solution,solvent,solute,dissolve,soluble,insoluble,filtrate and residue Value of a retirement annuity Personal Finance Problem An insurance agent is trying to sell you an annuity, that will provide you with $6 comma 200 at the end of each year for the next 20 years. If you don't purchase this annuity, you can invest your money and earn a return of 4%. What is the most you would pay for this annuity right now? Ignoring taxes, the most you would pay for this annuity is dependent and independent variable hi guys please help me i want an example of indepent and depent variable for ech variable example Note : please in science not in math in science Gratefully , Brainly Sthay home and keep safe The fraction bars represent which equation? A fraction bar is labeled 1. Underneath the bar, 4 boxes are labeled one-fourth. Underneath the 4 boxes, 8 boxes are labeled one-eighth. 6 of those boxes are circled. One-fourth divided by one-eighth = 6 Three-fourths divided by one-eighth = six-eighths One-fourth divided by one-eighth = StartFraction 6 Over 8 EndFraction Three-fourths divided by one-eighth = 6 the area of polygon MNOPQR = area of a rectangle that is 15 square units + area of a rectangle that is ___ square units. (input whole numbers only, such as 8)im not understanding too well so...please help :/ ture or false faith in the life and death of Jesus Christ incomplete without faith in the resurrection Please answer this correctly The next time someone hands you a Styrofoam cup full of juice, you might want to remind them that it takes a million years for that kind of cup to decay. This means that our landfills will be full of them for many centuries. Think about how much better for the environment it would be to bring along a reusable, washable plastic cup! It's up to you to help change the attitudes of people you know. They may not want to hear about the necessity of recycling. Why? Because it takes more effort to sort the trash, or put diapers or handkerchiefs in the laundry. They might rather throw all their garbage into one bag and use disposable diapers and tissues. If you are courageous enough to risk annoying your family and friends, you can make a real difference in the world. Remind people that scientists have figured out how to make bags and clothing from recycled plastic, so taking the time to put their plastic bottles in the recycling bin is worth the effort. Speak up, and help save the Earth! What is the author's purpose in writing this passage? A: to inform the audience about ways that people could help their communities B: to persuade the audience to get other people interested in recycling their trash C: to entertain the audience by sharing interesting facts about people's garbage D: to narrate a personal story about the author's adventures in recycling trash The City of Southern Pines maintains its books so as to prepare fund accounting statements and records worksheet adjustments in order to prepare government-wide statements. As such, the Citys internal service fund, a motor pool fund, is included in the proprietary funds statements. Balance sheet asset accounts include: Cash, $102,000; Investments, $150,400; Due from the General Fund, $18,300; Inventories, $396,000; and Capital Assets (net), $1,169,700. Liability accounts include: Accounts Payable, $61,500; Long-Term Advance from Enterprise Fund, $738,000. The only transaction in the internal service fund that is external to the government is interest revenue in the amount of $4,400. Exclusive of the interest revenue, the internal service fund reported net income in the amount of $84,000. An examination of the records indicates that services were provided as follows: one-third to general government, one-third to public safety, and one-third to public works. Prepare necessary adjustments in order to incorporate the internal service fund in the government-wide statements as a part of governmental activities. (If no entry is required for a transaction/event, select "No Journal Entry Required" in the first account field.) Jack's Construction Co. has 80,000 bonds outstanding that are selling at par value. Bonds with similar characteristics are yielding 8.5%. The company also has 4 million shares of common stock outstanding. The stock has a beta of 1.1 and sells for $40 a share. The U.S. Treasury bill is yielding 4% and the market risk premium is 8%. Jack's tax rate is 35%. What is Jack's weighted average cost of capital What did Charles Dickens have to gain from critiquing utilitarian education in his novel, Hard Times?support from teachersinfluence of popular opinionO endorsement of the QueenO a job as a professor Choose the ratio that you would use to convert 1.5 feet to miles. Rememberthat there are 5,280 feet in one mile.