The file below has heat capacity practice problems. If you have any questions, leave them in the Comments section.
| specific_heat_practice.docx |
9 Comments
Faith Barzyk
4/14/2013 12:35:31 am
Hi, I am really confused on questions 7-9 with the whole "calorie" and "energy concepts. Do you still use the same equation c = deltaH / deltaT * mass? If so what does energy value, energy absorbed go into the equation as? How d you find the energy value for kcal/g and kj/g?
Michael Rourke
4/14/2013 12:45:51 am
You're given energy in calories for a set amount of food, right? But in the problem, you don't eat that much food do you? How many calories are on the amount if food you consumed?
Faith Barzyk
4/14/2013 12:59:31 am
Yes you "absorb" 22 calories and I serving of pasta is 5.5 g but there is no ratio of how many calories there is per serving
Rourke
4/14/2013 01:39:10 am
Well if your given the mass, 2 g, and volume, 10 L, you could find the volume, g/L, right?
Faith Barzyk
4/14/2013 02:06:30 am
I guess not. But I'm still confused on what values you plug in for delta H deltaT and c
Faith
4/14/2013 02:07:45 am
4 kcal/g?
Michael Rourke
4/14/2013 02:12:04 am
You're not using that equation, are you?
Faith Barzyk
4/14/2013 03:27:21 am
So you don't even have to use the equation? Is my answer above correct?
Michael Rourke
4/14/2013 03:44:48 am
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