So how many atmospheres is this?
How many pascals is this?
I just need to know how to get the answer, I am stumped on this. Thanks for your help :)
2006-10-31 07:04:58 · 3 answers · asked by Heavy Metal 3 in Science & Mathematics ➔ Chemistry
The number of atmospheres is simply 440/760, which is obviously less than one but more than 1/2. There is roughly a drop of 1/2 of the pressure for every 18,000 feet of altitude on Earth, so 36,000 is 1/4, 54,000 is 1/8, 72,000 is 1/16 of an atmosphere, and so on. Your blood will begin to boil at normal body temperature when the pressure drops to ~44-45mm Hg, so aircraft flying higher than ~75,000 feet have to be pressurized.
2006-10-31 07:20:00 · answer #1 · answered by Sciencenut 7 · 0⤊ 0⤋
One standard atmosphere is 760 mm Hg. At sea level, the lapse rate of pressure is about one inch of mercury per thousand feet of elevation change, but that rate declines with increasing altitude, so you will need to refer to a table (or do some fairly hairy math) to get the height of the mountain from the pressure measured there -- assuming that the measurement was taken under standard conditions, which is usually not the case.
2006-10-31 15:09:23 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Hi. One atmosphere is about 760 mm of Hg. The rest is up to your calculator.
2006-10-31 15:10:14 · answer #3 · answered by Cirric 7 · 0⤊ 0⤋