# Physics Lab - Measurement of Absolute Zero?

This problem seems straightforward and easy enough, but I still want to check my answers.

Suppose the pressure of the bulb (light bulb I'm guessing used in experiment) is 20 psi (absolute) at 20C. What would you predict the pressure to be at 0C? What would you predict would be at 100C?

I used the ideal gas law equation P = nRT/V and got:
0C Pressure = 18.6 psi
100C Pressure = 25.5 psi

How'd I do? Did I get it right? Big Thanks!!!

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Sorry, I'm missing something, where does "absolute zero" come in?

Redbelly98
Staff Emeritus
Homework Helper

In the future it would be good to show how you calculate your answers ... if they're wrong, we wouldn't be able to help unless we can see your work.

p.s. whybother makes a good point, the thread title "Measurement of Absolute Zero?" seems unrelated to the question that was asked.

That's the headline in the lab manual! I'm not sure why the absolute matters either! Big Thanks for helping! next time i'll include work.

That's the headline in the lab manual! I'm not sure why the absolute matters either! Big Thanks for helping! next time i'll include work.
That's the headline in the lab manual? That's horrifying... 0K has nothing to do with this problem... at all...