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  katie, Wednesday, May 7, 2008 at 9:30pm
i don't understand this at alll

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  katie, Wednesday, May 7, 2008 at 10:40pm
okay so does it kinda look like this
(170)/298/333...i kinda understand not really 
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. 
chemistry  katie, Wednesday, May 7, 2008 at 10:47pm
ok so 170/298=P2/333
which is .570...how do i find P2 
chemistry  katie, Thursday, May 8, 2008 at 12:33am
ok so 170/298=P2/333
which is .570...how do i find P2 
chemistry  DrBob222, Thursday, May 8, 2008 at 12:40am
170/298 = P2/333
0.570 = P2/333
P2 = 0.570 x 333 = ?? atm.