A sample of air contains N2 and O2 ( the principal components of air) and small quantities of other gases and CO2 (greenhouse gas), This sample of air has a total pressure of 1.18 atm . If the partial pressure of O2 in the mixture is 0.350 atm and the partial pressure of N2 is 0.632 atm. Calculate the pressure in atm exerted by the other gas mainly CO2 in the atmosphere. a. 0.198 atm b. 1.18 am c. 1.98 atm d. 0.982 atm