A 37 gram sample of impure potassium ni- trate (KNO3) was heated to complete decom- position according to the equation2 KNO3(s) → 2 KNO2(s) + O2(g)After the reaction was complete, the volume of the dry gas produced was 1 liters at 74◦C and 723 torr. What was the percent KNO3 (101.1 g/mol) in the original sample? (As- sume that only the potassium nitrate had decomposed.)
A 37 gram sample of impure potassium ni- trate (KNO3) was heated to complete decom- position according to the
equation2 KNO3(s) → 2 KNO2(s) + O2(g)After the reaction was complete, the volume of the dry gas produced was 1 liters at 74◦C and 723 torr. What was the percent KNO3 (101.1 g/mol) in the original sample? (As- sume that only the potassium nitrate had decomposed.)
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