A student thermally decomposed a .810 gram sample of impure potassium chlorate. Manganese dioxide was used as a catalyst in the reaction. The student collected 43.60 mL of oxygen gas over water in a eudiometer. Potassium chloride was the other product of the reaction. The temperature and pressure at collection time were 20 Celcius and 762.10 torr respectively. The water level in the eudiometer was 4.22 cm above the outside water level in the beaker. a) write a balanced equation for the reaction. b) what is the corrected pressure of the dry oxygen gas c) what is the volume in mL of the dry oxygen gas at STP conditions d) how many molecules of oxygen gas were collected e) what is the percent purity of the original potassium chlorate sample.

Answer is in a file below

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