How many moles of co2 could fit in a 475 ml bag at - 22c and 1.125 atm?

To answer this item, it is best that we assume that CO2 behaves like an ideal gas. So we can use the equation,

n = PV/RT

Substituting the known values,

n = (1.125 atm) (0.475L) / (0.0821 L. atm/mol. K) (-22°C + 273.15)

n = 0.0259 mol

Thus, the number of moles of CO2 that would fit in the bag is approximately 0.0259 mols.