15+Thermodynamics

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Videos:
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Notes:
When you open the file above, if get a message that a font is not installed open the files below and click install from the top left part of the window.

Another formula for Change in Entropy is:
 * Change in Entropy formula is:**
 * Power is often reported in kW not watts. **


 * The formula for two cars colliding and not moving afterward is the formula for heat. All of the Kinetic energy of the cars is converted into heat.**

[[image:thermo1.png]]

 * Thermodynamics Videos **

Discussion:
[|abbycatheryn] Feb 8, 2010 8:16 am go through the chapter of the book and write down all of the formulas. you wont have to use some of them but you will have to use older formulas like V1P1T2=V2P2T1 and PV=nRT. be sure to ask for help when you need it because all of the information can get really confusing.
 * re: 11 Thermodynamics**

[|amr3363] Feb 11, 2010 7:04 am You will do a lot of flipping through the pages if you don't go ahead and write the formulas down. PV=nRT is in an earlier chapter in the book. remember that n means number of moles. The efficiency formulas in the book are a lot more complicated than the one Mrs. Duncan can give you. There is a lot of chemistry in the lab, so make sure you remember balanced equations and things like that. If you're changing something from cm cubed to m cubed, make sure you cube the number, too. pressure has to be in Pa instead of atm. PAY ATTENTION TO THE UNITS!

[|nchsclarkm] Mar 1, 2010 7:35 am To Whom It May Concern: As stated before, the most important thing in this chapter is finding the formulas that you will be manipulating. A lot of them still apply from the previous heat chapter. Some of the most important ones are PV=NRT, W=PDeltaV, U=Q-W, and Charles Law. The lab is fairly simple because of your partner's assistance, but just remember that Test 4 requires the solution to sit overnight, and the SIX MOLAR nitric acid is VERY corrosive. Lots of these questions are extremely simple with a "plug-and-chug" method of solving them. Get help with the harder problems first so you will not have to rush to finish them in the end like I did. Good Luck, Michael Clark

[|ethanp1] Mar 4, 2010 7:20 am This chapter is easy to make simple mistakes in be sure when you convert cm^3 to cube the number also. Mrs Duncan explains efficiency much simpler than the book does. Remember to use kelvin in PV=nRT or your answer will be off. Most of the work is manipulating a couple of formulas. Give yourself about three days to do the labs and be careful with the ethanol it is VERY flammable.

[|ncmarleer] Apr 14, 2010 7:29 am I found ch. 11 on thermodynamics very difficult. It has a lot to do with chapter 10 on heat and chapter 5 on work and energy. You will use the efficiency formulas, and work formula which is w=pv, use will also use u+w=q. You will have a lab to complete with for different tests to perform. Be careful with some of the chemicals because they are flammable. Pay attention to your units because it is easy to get confused and mess up. Good luck.