5/ 44= 0.114 mol, since the atomic mass of CO2 is 44 a.m.u. (atomic mass units)

Furthermore the pressure is P = 786.1/760 = 1.034 atm.

Then I apply the equation of gases:

P*V = n*R*T

where P is the pressure, V is the volume, Tis the temperature in Kelvin (273+88.2=361.2 °K), n is the number of moles of our sample of CO2; so I can write: