Posted by **katie** on Wednesday, May 7, 2008 at 7:54pm.

A scuba tank is filled to 2500 psi(170 atm) in a dive shop at room temp/(25 degrees C) then stored in the trunk of a car on a hot day. What will be the new pressure in the tank if the temp. in the trunk reaches 60 degrees C? Express that pressure in atmospheres, not psi.

- chemistry -
**DrBob222**, Wednesday, May 7, 2008 at 8:09pm
(P1V1)/T1 = (P2V2)/T2

Use 170 atm for P1 and the answer will be in atm. Don't forget to use Kelvin for T1 and T2.

- chemistry -
**DrBob222**, Wednesday, May 7, 2008 at 10:33pm
You plug in 170 atm for P1, there is no V1 or V2 in the problem, and T1 = 25 degrees C which si 273 + 25 = ??Kelvin. Continuing, P2 is what you want to know, V2 is not in the problem, and T2 is 60 degrees which must be convert to Kelvin. Then solve for P2.

- chemistry -
**DrBob222**, Wednesday, May 7, 2008 at 10:44pm
We have P1/T1 = P2/V2

You have P1 in the right place with the right number. Yuo have 298 ok. I don't see an equal sign. I don't see P2 (which you're solving for) and the 333 (the right number Kelvin) is not in the right place. Follow the guideline above. The equation is

P1/T1 = P2/T2.

Solve for P2 but substitute the numbers first and solve it step by step.

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