How much gas is in the atmosphere of mars?
Researching your question, I couldn’t find an exact (or even estimated) value for the volume of gas on Mars. What I can tell you is that the atmosphere on Mars is primarily CO2, and the average pressure on the surface of the planet is 1/100th of what it is here on Earth. That, and the amount of CO2 in the atmosphere changes seasonally. During the Martian winter, some of it freezes and falls as snow on the planets poles. Then in the summer, it sublimates back into a gas.
