What Mass of KClO₃ Must Be Decomposed to Produce 126

question 62

Multiple Choice

What mass of KClO₃ must be decomposed to produce 126 L of oxygen gas at 133°C and 0.880 atm? (The other reaction product is solid KCl.) (R = 0.08206 L • atm/K • mol)

• A) 24.6 g
• B) 70.8 g
• C) 272 g
• D) 408 g
• E) 612 g

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