Oxygen can be prepared by heating potassium chlorate, KClO3, with manganese dioxide as a catalyst. The reaction
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How many moles of O2 would be obtained from 1.300 g KClO3? If this amount of O2 were collected over water at 23oC and at a total pressure of 745 mmHg, what volume would it occupy?
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2KCIO,(s) Mao, 2KCI(<) + 30.8)
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