dat destroyer gen chem #31

[yahoogoogle]

Advertisement - Members don't see this ad

I thought that to convert liter atm to J there should be a conversion factor of 101, and so that would make the asnwer choice to be c (-10KJ). what do you guys think?

 

[levyusupov]

this question is simple thermodynamics question.

you need to take the numbers and just plug in to the following equation:

W= -(P)(change in volume) where P= 4 atm and and the change in volume is -16 liters.

no need to convert to nothing, don't complicate yourself and everybody else. this is the easiest problem in destroyer.

 

[dantheman2007]

PLease don't take this the wrong way but if someone has trouble with a problem it's not appropriate to say that it's the easiest problem; maybe for you but not for others. Some people find it rather insulting.
Best,
Dan

 

[levyusupov]

PLease don't take this the wrong way but if someone has trouble with a problem it's not appropriate to say that it's the easiest problem; maybe for you but not for others. Some people find it rather insulting.
Best,
Dan

i didn't try to insult anybobody, and if i did i am sorry, just tried to help, that is it.

 

[yahoogoogle]

this question is simple thermodynamics question.

you need to take the numbers and just plug in to the following equation:

W= -(P)(change in volume) where P= 4 atm and and the change in volume is -16 liters.

no need to convert to nothing, don't complicate yourself and everybody else. this is the easiest problem in destroyer.

thanks for the help.

units don't match though. L atm is not the same as joul. you need to multiply whatever you get by 101 to get energy in joul.

 

[IWantH2O]

thanks for the help.

units don't match though. L atm is not the same as joul. you need to multiply whatever you get by 101 to get energy in joul.

he is right, units dont match...or am i missing something

 

[Albuterol]

the 10kj is extra information and is not needed to solve this problem.
your answer will be in L*atm.

 

[IWantH2O]

the 10kj is extra information and is not needed to solve this problem.
your answer will be in L*atm.

ya but in hte answer key its written as KJ

 

[Albuterol]

ahh i see...it has to be an error in destroyer.
because otherwise the answer would be -9.6 KJ.

 

[wbloo]

The reason I think units don't matter here is because:
W = -P(change in Volume) = f x d = Change in KE
Kinetic Energy is measured in Joules, so I think that's why it works out.

 

[IWantH2O]

ahh i see...it has to be an error in destroyer.
because otherwise the answer would be -9.6 KJ.

so to convert L(atm) to KJ, u divide by 10?

 

[Albuterol]

1L*atm = 101 J

-96* 101= -9696 J * (1 KJ/1000 J)= -9.696 KJ