show work please! 21. The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L. What is the final pressure B) 0.30 atmC)3.3 atm D) 4.8 atm E)1.0 atm of the gas, assuming no change in moles or temperature? A) 1.2 atm me of a gas with an initial pressure of 380 mmiig atm increases from 5.0 L to 8.0 L. What is I pressure of the gas,in atm, assuming no change in moles or temperature? 22. The A) 238 atm B) 2.4 atmC) 0.31 atm D) 0.80 atm E) 8.0 atm A balloon is filled with helium gas. For the questionts) that follorw, select the letter of the ballon diagram that corresponds to the given change in conditions. Initial Volume The balloon is put into a chamber whose pressure is less than the atmospheric pressure and at atmospheric temperature. A)A B) B 23. C) C D) A and B E) B and C Solution Ans 21 : B) 0.30 atm Pressure is related to volume as : p1V1 = p2V2 putting values : 1.2 x 1.0 = p2 x 4.0 p2 = 0.3 atm .