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Oxygen gas can be prepared by heating potassium chlorate according to the following equation: 2kclo3(s)2kcl(s) + 3o2(g) the product gas, o2, is collected over water at a temperature of 25 °c and a pressure of 749 mm hg. if the wet o2 gas formed occupies a volume of 5.76 l, the number of moles of kclo3 reacted was mol. the vapor pressure of water is 23.8 mm hg at 25 °c.
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