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Because water molecules form weak bonds between themselves.
1.7 atm/bar (1.8 divide by 1.03)
Is the Gauge Pressure for a given depth in salt water be the same/greater/less than the same depth of fresh water?
The volume of the Balloon would decrease
If a balloon is filled to 2 litres at 45 metres, and then released, assuming that it doesn’t explode, what will it’s volume be upon reaching the surface?
(Using box method.. 2 x 5.5 = 11)
Approximately how much air mist be pumped down from the surface to fill a 60 litre container if the container was in 50 metres of water?
(Using box method.. 60 x 6 = 360)
What is the partial pressure of Nitrogen in Air if breathed up a mountain, where the surrounding pressure is 0.6 atm?
Even this can be worked out by the Box method!
the absolute pressure is 0.6 ( it says so in the question!) the approximate percentage of Nitrogen in the air is .80% so the calculation would be: 0.8 x 0.6 = 0.48)
A diver breathes from a cylinder that contains 0.03 % carbon monoxide. At a depth of 25 metres, this would have the same effect as breathing … % at the surface?
(Using box method: 0.03 X 3.5 = 0.105)
At a depth of 20 metres, approximately how much denser is the air a diver breaths as compared to the surface?
(even this can by solved using box method: 1 x 3 = 3)
If a diver breathes a complete cylinder of air in 70 minutes. at the surface, how long would it take to breathe the whole cylinder at 25 metres?
Using the box method: (70 divide by 3.5 = 20 minutes)
If an object weighs 720 Kg and displaced 120 litres, how much more fresh water would need to be displaced to bring the object to the surface?
( as it’s in fresh water, 720 – 120 = 600 )
If an object weighs 377Kg and displaced 89 litres, how much more sea water would need to be displaced to bring the object to the surface?
( as it’s in salt water, 377 divide by 1.03 = 366.
Then .. 366 – 89 = 277)
If a full scuba cylinder was placed outside in full sunshine on a hot day. What would happen to the pressure inside the cylinder?
The pressure inside the cylinder will increase
If an object that weighs 970 Kg and displaced 420 litres, is in fresh water how much air would need to be added to a lifting bag to bring the object to the surface?
( as it’s in fresh water, 970 – 420 = 550)
If an object that weighs 68 Kg and displaced 15 litres, is in salt water how much air would need to be added to a lifting bag to bring the object to the surface?
(as it’s in sea water, 68 divide by 1.03 = 66
Then .. 66 – 15 = 51 litres)