Question: 1. A frequently used method for preparing oxygen in the laboratory is by the thermal decomposition of potassium chlorate according to the following unbalanced chemical

1. A frequently used method for preparing oxygen in the laboratory is by the thermal decomposition of potassium chlorate according to the following unbalanced chemical equation: KClO3(s)KCl(s)+O2(g) What mass of O2(g) can be produced from 30.6g of KClO3(s) ? 12.0g 45.9g 20.4g 15.3g

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