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How Many ML of O2 Gas at 25°C and 755

Question 25

Multiple Choice

How many mL of O2 gas at 25°C and 755 mm Hg pressure can be produced from the thermal decomposition of 0.300 grams of KClO3(s) according to the chemical equation shown below?
2 KClO3(s) → 2 KCl(s) + 3 O2(g)


A) 30.1 mL
B) 40.2 mL
C) 90.4 mL
D) 181 mL

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