How Many Moles of Oxygen Are Formed When 58

question 49

Multiple Choice

How many moles of oxygen are formed when 58.6 g of KNO₃ decomposes according to the following reaction? The molar mass of KNO₃ is 101.11 g/mol. 4 KNO₃(s) → 2 K₂O(s) + 2 N₂(g) + 5 O₂(g)

• A) 0.290 mol O₂
• B) 0.580 mol O₂
• C) 18.5 mol O₂
• D) 0.724 mol O₂
• E) 1.73 mol O₂

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