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Friday, November 26, 2010
Ch 14_2 #2
Use constant pressure and constant volume processes to calculate the heat. Pay attention what does the work since you need to put sign properly. For part c calculate initial and final temperatures to decide how much energy changed
9 comments:
Breveenn
said...
For Part c Why did we have take delta T for and what about the internal energy?
Internal energy is proportional to change in temperature thus knowing the change in temperature between 1 and 3 you can infer the change in the energy.
I know the answer I got was right but the homework won't accept it because I don't have enough sig figs? How many do I need I put in everything correct and it just keeps telling me not quite
9 comments:
For Part c Why did we have take delta T for and what about the internal energy?
Internal energy is proportional to change in temperature thus knowing the change in temperature between 1 and 3 you can infer the change in the energy.
I don't understand the problem, are we suppose to use W=P(deltaV) and Pv=nRT? Or deltaU=nCvdeltaT? How are we suppose to tackle the problem?
I really dont understand why I am getting part B wrong can someone please explain to me how they did it?
how do we tackle this problem? I found W using W=pdeltav. Where do i go from there
do we use atm for the pressure or do we need to convert that into something bec. im not getting the right answer.
i had 800cm3 and .1 mol and i thought i should use the equation (pv2)/nr=delta T and I got (4*800000)/(.1(.08206) which is wrong help please :)
I've tried part b several different ways. Can anyone help me figure this out?
I know the answer I got was right but the homework won't accept it because I don't have enough sig figs? How many do I need I put in everything correct and it just keeps telling me not quite
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