A reaction of heating potassium permanganate produces
potassium manganate, manganese dioxide and oxygen gas.
Heat 15.8 g potassium permanganate until no more oxygen gas
is given off. The remaining material has a mass of 14.2 g. What
mass of oxygen gas was produced in the reaction?
_g
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Ответ:
Flat fee of 20 dollars with 5 dollaers every hour=
20+h5
Step-by-step explanation: