'11. How much work does a gas perform at a constant pressure of 8.4 atm 'I point as it expands from a volume of 2.0 L to 4.5 L? 0 d1 206.01 J For items 12-13. There is a rigid chamber containing a 2.4L gas having 300 K and a pressure of 4.3 atm. 390 K Gas 4.8 atm 12. What should be the temperature of the outside air to decrease the 1 point pressure of the gas. a. 200 K O b. 350 K C. 400 K O d. None of the choices 13. How much work is done by or on the gas if the pressure is decrease 1 point from 4.8 atm to 3.4 atm? O a. o J O b. 420 J O c. 3.36 J O d. 720 J