Finding Absolute Zero - this is for physics and Biochemist PDF

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this is for physics and Biochemist exam...

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Diana Varela Ajche Taylor Chapman Jada Williams Issaias White Class Section: R-2 PM

Finding Absolute Zero Objective: The objective of this experiment is to determine the absolute zero point of temperature. Data and Analysis: See attached graphs and tables in page 2. Conclusion It was determined that the absolute zero value is –282.37 °C. Discussion: When plotting the line of the absolute Zero temperature, all the pints did not fall in the same line. We had an OUTLIER point which was the CO2. When this point was removed, we noticed an instant improvement in the results as it moved the temperature closer to the known value of -273 °C. Our Results showed that with the outlier, our temperature was -295.5 °C which is way above out desired temperature. This is due to a systematic error where there is a heat flux going on so the temperature will never reach the desired temperature. However, the removal of the outlier brought the temperature closer to the known value of -273 °C with smaller uncertainty.

Graphs and Tables showing the absolute zero temperature with CO₂ and without CO ₂ outlier point.

Absolute Zero With CO₂ 150

P (p TEMPERATURE ⁰C

15. 12. 10. 3.5

100 50 f(x) = 24.78 x − 295.54 0 -50

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-100 -150 -200 -250

PRESURE (psi)

Absolute Zero Without CO₂

P (ps 15.5 12.4 3.5

TEMPERATURE ⁰C

150 100 50 0

2 -50

f(x) = 24.65 x − 282.37

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-100 -150 -200 -250

PRESURE (psi)

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