>>11109332Remember, on Earth, oxygen only makes up 21% of the breathable air. 78% is nitrogen and the rest is argon & trace gases. Mars is believed to have about 95% carbon dioxide and 0.13% oxygen, but the pressure is less than 1% of Earth atmospheric pressure at sea level. Earth has a pressure of
>>11109490>Everest-gear standard is a huge improvement over a spacesuit.Some sci-fi books have it at this point on Mars after decades of, "terraforming."
Mount Everest's peak has an altitude of 29,029 feet (5.497 miles) above global mean sea level on Earth. That is on average 30 kPa. Mars atmosphere pressure is only 0.610 kPa.
>Earth's atmosphere is about 300 miles (480 kilometers) thick, but most of it is within 10 miles (16 km) the surface.Thus, in a round about way Mount Everest's peak is about a bit more than halfway up into Earth's usable atmosphere. Meaning, there's only about 4.503 miles of atmosphere above it. Let's pretend this is the distance we need for your exercise,
Mars diameter: 4,212.3 miles
Mars volume: 39,100,000,000 cubic miles
Needed atmosphere thickness: 4.503 miles
Mars Dia + Atmosphere thickness = 4216.803 miles
Mars Dia + Atmosphere volume = 39,300,000,000 cubic miles
39,300,000,000 cubic miles - 39,100,000,000 cubic miles = 200,000,000 cubic miles
You need 200,000,000 cubic miles of breathable air to reach Mount Everest level of atmospheric pressure on Mars.
21% of 200,000,000 cubic miles = 42,000,000 cubic miles (68,731,291 megatons) of pure oxygen needed.
>all calculations are fuck terrible and make wide assumptions and probable have huge mistakes everywhere. 
