How Many ML of O₂ Gas at 25°C and 755

question 125

Multiple Choice

How many mL of O₂ gas at 25°C and 755 mm Hg pressure can be produced from the thermal decomposition of 0.500 grams of KClO₃(s) according to the chemical equation shown below? 2 KClO₃(s) → 2 KCl(s) + 3 O₂(g)

• A) 50.2 mL
• B) 67.0 mL
• C) 151 mL
• D) 302 mL

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