HtofSubF06 - Chem 124 Name Cameron Kirby Computer Number 21...

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Chem 124 Name Cameron Kirby Computer Number 21 The Heat of Sublimation of Dry Ice Instructions: This report is to be completed by each of you INDIVIDUALLY after performing the experiment with your partner. This report is due at the beginning of class on the next scheduled lab day (either Monday Oct. 9 th or Tuesday Oct. 10 th ). You are to fill in this form using Microsoft Word to create a clear and informative report. To draw attention to your answers, you may want to use color or bold type. You may write in by hand the sample calculations – but if you do so, it must be neat and very legible! If your writing is not neat or legible, you will lose points. You will turn in a hard copy of this report. Calculated Results: Fill in your results of your calculations in the table below. Title the table appropriately! (in space below) Thermo Chemical Process Trial # Heat Energy Exchanged Heat of Sublimation (in kJ/mol CO 2 ) 1 41.2 K 28.7 kJ/mol 2 44.2 K 32.6 kJ/mol 3 46.1 K 31.5 kJ/mol Average 43.8 K 30.9 kJ/mol Show a sample calculation for each of the following within the provided space: 1) heat energy exchanged: q=mCΔT q=(56.863g)(.004184 kJ)(-41.2 K) q= -9.08 kJ 2) heat of sublimation in kJ/mol of CO 2
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Chem 124 ΔH sub =q co 2 /mol 15g CO 2 (1 mol CO 2 /44g)=.341 mol ΔH= 9.8 kJ/.341 mol ΔH=28.7 kJ/mol Cluster Results: Record the results from the three best trials of each of the other stations in your cluster in the table below. Trial #
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This note was uploaded on 04/02/2008 for the course CHEM chem 107 taught by Professor Hascall during the Spring '07 term at Cal Poly.

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HtofSubF06 - Chem 124 Name Cameron Kirby Computer Number 21...

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