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A Mixture of KCl and KClO3 Weighing 1 \rightarrow 2KCl(s) + 3O2(g)
A) 37

Question 39

Multiple Choice

A mixture of KCl and KClO3 weighing 1.80 g was heated; the dry O2 generated occupied 1.40 * 102 mL at STP. What percent of the original mixture was KClO3? KClO3 decomposes as follows: 2KClO3(s) \rightarrow 2KCl(s) + 3O2(g)


A) 37.2%
B) 72.6%
C) 42.6%
D) 63.8%
E) 28.4%

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