Oxygen gas can be generated by heating KClO3 in the presence of some MnO2.
2KClO3 → 2KCl + 3O2
If all the KClO3 in a mixture containing 1.67 g KClO3 and 0.35 g MnO2 is decomposed, how many liters of O2 gas will be generated at T = 30.0°C and P = 753.3 torr?