Chapter 8 problem #9

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Chapter 8 problem #9

Postby KimberlySalinas_2A » Thu Jan 19, 2017 12:35 pm

How do we convert from L*atm to Joules ?

Sonam Sidhu 2J
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Joined: Wed Sep 21, 2016 2:57 pm

Re: Chapter 8 problem #9

Postby Sonam Sidhu 2J » Thu Jan 19, 2017 4:47 pm

Hi, I was also wondering this and, after looking it up, I think this may be right:
So after finding the area and multiplying it with the distance we end up with: 141.1 cm^3
We then multiply 141.1 cm^3 with 2.00 atm to get 282.8 cm^3*atm.
Recall that 1 cm^3 is equal to 1 mL.
1 mL*atm = 0.101325 Joules
282.8 mL*atm * 0.101325 Joules = 28 Joules

That should match the answer in the back of the textbook. However, I don't know if we are already supposed to know the conversion of mL*atm to Joules or if it will be given to us.
Sorry if that wasn't much help!

Edit: I looked at my notes for 8.3 and not 8.9 and I don't know how to delete this post so please just ignore it!

Jessica Pak 2F
Posts: 10
Joined: Wed Sep 21, 2016 2:55 pm

Re: Chapter 8 problem #9

Postby Jessica Pak 2F » Sun Jan 22, 2017 8:01 am

Hi! On the equations sheet that came with the course reader it says that 1L*atm = 101.325 J :)

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