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l. unit 12 energy 2013-2014

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Page 1: l. unit 12 energy 2013-2014
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Percent error = measured chip calories/actual chip calories x 100

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Title

Name, Date

(For example:

Potato Chip Calorimetry

Or Energy Analysis of a common Snack Food)

Schematic drawing

With labels

Of your

calorimeter

caption

Conclusions

Include the Nutritional

Calories calculated for

your chip, the estimated

real nutritional calories for

your chip, and an

explanation for the

difference.

Data

Q = mcDT

Q=

M=

C=

DT =

= ( ) ( ) ( )

= ___ J

= ___Nutritional

Calories

Pick a topic:

1. What is calorimetry?

2. Sources of Error

in our calorimeter design

3. A better design for

the next experiment

10 points:

1. Effort: 5 points

-does this represent

45 minutes of effort?

2. Calculations: 3 Points

-are they accurate?

3. Analysis: 2 points:

Why are the results so

bad (or so good).

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D

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D

° °

° °

°

° °

D

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° ° °

° °

° °

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° ° ° °

°

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DG = DH –TDS

Where

DG = Gibbs Free Energy

DH = Enthalpy in Joules

T = Temperature (K)

And DS = Entropy in Joules/K

D D D

D D D

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D D

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D D

D D D

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