How Many Grams of KCl(s)are Produced from the Thermal Decomposition

question 63

Multiple Choice

How many grams of KCl(s) are produced from the thermal decomposition of KClO₃(s) which produces 100.0 mL of O₂(g) at 25°C and 1.00 atm pressure according to the chemical equation shown below? 2 KClO₃(s) → 2 KCl(s) + 3 O₂(g) ?

• A) 0.203 g
• B) 0.305 g
• C) 0.334 g
• D) 0.608 g

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