Solid potassium chlorate (KClO3) was placed in an evacuated closed 1

Subject:ChemistryPrice:3.87 Bought7

Share With

Solid potassium chlorate (KClO3) was placed in an evacuated closed 1.00 L flask which was then heated to 400°C to completely decompose the KClO3 to form solid potassium chloride and oxygen gas. The resulting pressure of the oxygen gas in the flask at 400°C was determined to be 1.35 atm. How many grams of the KClO3 was initially placed in the flask ?

(1) 1.0g (2) 2.0g (3) 3.0g (4) 4.0g (5) 5.0g