What volume of air at 0.98 atm can be compressed into an 11.1 L scuba air tank if the tank is pressurized to 204 atm?

To be able to answer this, we need to relate volume with temperature and pressure. To simplify, we assume ideal gas so we use the equation PV=nRT.

PV = nRT

at constant nRT, P1V1 = P2V2

204 (11.1) = (0.98) V2

V2 = 2310.61 L