Question: 1 atm is equal to how many celsius?
Answer: Divide the result by the gas constant, which is 0.08206 L atm/mol K: 10 / 0.08206 = 121.86. This is the gas's temperature, in Kelvin. Subtract 273.15 to convert the temperature to degrees Celsius: 121.86 - 273.15 = -151.29.