A student heats a 2.8594 gram sample of mixture that contains an unknown amount of Potassium ChlORATE (KClO3) in a test tube in the presence of some MnO2 catalyst. The KClO in the mixture decomposes during the heating process, release its oxygen. Subsequent to the sample has cooled the student finds the mass of the sample residue to be 2.2103 grams.
1. Explain how many grams of oxygen atoms were in the KClO3 in the original sample?
2. Define how many moles of oxygen atoms is this?
3. Explain how many moles of KClO3 must have been in the original sample?
4. Define how many grams of KClO3 must have been in the original sample?
5. Define what is the % of KClO3 in the original sample?