Question

2. An aluminum scuba tank, which has an internal volume of 11.1 L, is filled with air to a pressure of 3000 psi when at room temperature (i.e. 20.0 OC). A diver takes the tank into seawater, where the water temperature is 46 degrees Fahrenheit (i.e. 8.00OC). To what pressure does the air in the tank drop? (The thermal coefficient of expansion for aluminum is 24.0x10-6 OC -1 .)

Answer: 2880 psi

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Answer #1

2. An aluminum scuba tank, which has an internal volume of 11.1
L, is filled with air to a pressure of 3000 psi when at room
temperature (i.e. 20.0 OC). A diver takes the tank into seawater,
where the water temperature is 46 degrees Fahrenheit (i.e. 8.00OC).
To what pressure does the air in the tank drop? (The thermal
coefficient of expansion for aluminum is 24.0x10-6 OC -1 .)
Answer: 2880 psi
Don't need #2, just #3 please.
3. For...

4. The diver in Problem 2, while underwater at a depth of 20.0
m, breathes from the tank so that the air entering the diver’s
lungs is at the same pressure as that of the surrounding water. If
each breath fills the diver’s lungs to a volume of 3.70 L, and the
air he breathes warms to a temperature of 30.0OC, how many breaths
can the diver take before the air remaining in the tank drops to a
pressure of...

Scuba Tanks: A popular scuba tank is the “aluminum 80,” so named
because it can deliver 80 cubic feet of air at “normal” temperature
(72°F) and pressure (1.00 atm, 14.7 psi) when filled with air at a
pressure of 3000 psi. A particular aluminum 80 tank has a mass of
15 kg when empty. What is its mass when filled with air at 3000
psi?

A scuba diver takes a tank of air on a deep dive. The tank's
volume is 10 L and it is completely filled with air at an absolute
pressure of 237 atm at the start of the dive. The air temperature
at the surface is 85 ?F and the diver ends up in deep water at 60
?F.
Assuming thermal equilibrium and neglecting air loss, determine
the absolute internal pressure of the air when it is cold.

A SCUBA tank, an air tank used for breathing under water, is
initially filled with gas at a pressure of 2.8x107 Pa and 32 oC.
The tank has a volume of 11.5 L. If the tank will continue to
provide air until it reaches a pressure of 1.2x106 Pa, how many
moles of gas will it provide to a diver diving in water at 10 oC?
Give your answer in moles to at least three significant figures.
Hint: There will...

A SCUBA tank, an air tank used for breathing under water, is
initially filled with gas at a pressure of 2.3x107 Pa
and 25 oC. The tank has a volume of 16.0 L. If the tank
will continue to provide air until it reaches a pressure of
2.5x106 Pa, how many moles of gas will it provide to a
diver diving in water at 6 oC? Give your answer in moles
to at least three significant figures. Hint: There will...

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