Ideal Gas HW Problem!? 1. The problem statement, all variables and given/known data "At an altitude of 11,000 meters, the air temperature is -50 degrees celsius. The air density is 0.403 kg/m^3. What is the pressure of the atmosphere at that altitude." 2. Relevant equations P = P0exp(- Mgy/RT) 3. The attempt at a solution I attempted to solve the problem using the above equation above equation and my result was P = 2.8 * 10^4. However my online homework is not accepting the answer and I'm not sure what I did wrong. Any help would be greatly appreciated!