my teacher give the question regarding air expansion...given submarines at 200m depth. volume air available in air bottle is 10000L at 245 bar pressure. when the air blowed into ballast tank which it's volume is 240,000L, how much volume in air bottle remains when submarines rest at surface.?
2006-09-28 07:58:04 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
this is not a trick question. what do mean i'm not asking it right?
2006-09-28 08:11:27 · update #1
Unless this is a trick question, you didn't ask it right.
If it is a trick question, the answer is 10000L. Gasses take on the volume of their container--only the pressure would change.
The other guy gave the formula for gasses: PV=nrT. Its been a while since I've had physics, but I think you need to solve for n (the number or air molecules, in moles). I think you assume that pressure in the ballast tank is one atmosphere (I don't know how many bars that is), and that T and r will be the same. Once you know how much air is in the whole system, you can subtract the amount released into the ballast tank. Once you know how much n is left in the air bottle, you can find the pressure and volume.
If you only care about volume, and not pressure, you gave the answer in the question--10000 L. It doesn't matter that you let some air out, the volume is the same. It is just at a lower pressure.
2006-09-28 08:02:32 · answer #1 · answered by wayfaroutthere 7 · 0⤊ 0⤋
10000L at about 24 bar pressure.
2006-10-04 15:30:17 · answer #2 · answered by BrettO 2 · 0⤊ 0⤋
PV=nRT
2006-09-28 08:02:40 · answer #3 · answered by PJ 3 · 0⤊ 0⤋