Chemistry Help? difficulty question

Posted on 2016-11-17 18:32:00 in Chemistry by DEWEY

Small rocket engines, such as model rockets, contain KClO3 to provide oxygen for the combustion reaction that fuels the rocket motor. The relevant reaction for KClO3 is: 2 KClO3(s) → 2 KCl(s) + 3 O2(g). If 161. liters of gaseous O2 at 1.22 atm and 590.0 oC are required for the model rocket to climb 1000 feet, how many grams of solid KClO3 must be placed in the rocket engine?

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