Below is the solution:
PV = nRT
P = pressure = 1.0 atm
V = volume in Litres
n = moles CO2 = ? mol
R = gas constant = 0.082057 L atm mol^-1 K^-1
T = temp in Kelvin = 293.15 K
Solve for n
n = PV / RT
Then mass CO2 = moles x molar mass
= n x 44.01 g/mol
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