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no. oxygen and pressure is a lethal combination... 400ft has just to much pressure..
you will need nitrous to dive that deep... which is very dangerous.
Addition
Yes, technical divers can dive to 400 feet. But they do not breathe pure oxygen (or nitrous on the bottom). They breath a combination of helium, oxygen and nitrogen known as trimix.
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Scuba tanks have wh at noble gas in them?
Some advanced divers dive using gas mixtures including Helium.
Which is better Steel or aluminum dive tanks?
Steel has been used as a tank material since the begining of scuba diving. Extremely durable and useful as a tank material but steel rusts. Buy a steel tank, assume that over the life of the tank it will cost you for a few tank tumbles to remove interior rust. Pay more for a steel tank than an aluminum one. Steel will last (almost) forever if you take care of it. There are steel tanks still in service today that were originally manufactured in the 50s. Aluminium tanks came out in the 70s. It's a softer material, the walls of aluminum tanks are thicker, making them a little larger than steel tanks of the same capacity. The big advantage of aluminum is that it doesn't rust and it's less-expensive than steel. You can find aluminum tanks cheap, for $100-150.
How many gallons of water are in Epcot's Dive Quest?
The Dive Quest saltwater aquarium contains 5.7 million gallons.
Does water cover our bodies?
Yes - when we dive.
What is the percentage of oxygen and helium in diving?
The percentage of oxygen in diving varies depending on the diving depth and the type of diving. For recreational diving, the typical oxygen concentration is around 21%. However, for technical diving, the oxygen concentration can be increased up to 100% to reduce the risk of nitrogen narcosis at greater depths. Helium is often used as a diluent gas in technical diving to reduce the amount of nitrogen in breathing mixtures at very deep depths. The percentage of helium varies typically between 0% and 90% depending on the dive plan and depth.
How deep can a person dive with helium-oxygen air tanks?
It depends on the percentage of the mixture You can adjust the percentage depending on desired depth and length of dive.
What can be purchased at a dive shop?
A dive shop sells all the required components for one to go underwater diving. They sell wetsuits, oxygen tanks, masks, fins, snorkels and accessories.
What is a two tank dive?
A dive that requires two tanks of air to complete
How can submarines float and sink?
Submarines change their depth by use of ballast tanks. To dive, they open their tanks so that they become filled with water. They also angle their dive planes. To surface, they pump the water out of their tanks and fill them with pressurised air.
What is the purpose of a submarine's ballast tanks?
to keep the sub level or help it to dive and surface
How does a submarine dive under water from the surface?
Submarines dive by opening vent valves that allow sea water to push air out of their ballast tanks.
Can you scuba dive with a pure oxygen tank?
No.
How far can you scuba dive before you would die?
The world record for a scuba dive (without protective gear, beyond a wet suit and oxygen tanks) is approximately 1029 feet. The immense pressure which builds exponentially as an object descends is sufficient to crush humans at a lesser depth, in many instances.
Did Hitler use blitzkrieg to invade Poland?
Yes - Junkers dive-bombers and massed tanks.
How much do aluminum dive tanks weigh?
The standard 80 weighs about 32 pounds empty.
How do you filling pressure in Breathing appratus?
If you mean Scuba tanks, call a dive shop, if you mean emergency breathing tanks, call your local Fire Co.
Can a human scuba dive to the ocean floor?
yes
