A 0.765g sample of umpure KClO3, was decomposed by thermal decomposition into oxygen gas the potassium chloride the oxygen, 222.50ml, was collected in a eudiometer over water at the temperature 20.00C and a pressure of 777.00mmHg. the water level in the eudimeter is 42.2mm above the water level in the beaker. the vapor pressure of water at this temperature is 17.54 mmHg. 1mmHg= 13.6mmH2O. what is the volume of the dry oxygen at STP?

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