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How Many Moles of Oxygen Are Formed When 58

Question 183

Multiple Choice

How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction? The molar mass of KNO3 is 101.11 g mol-1.
4KNO3(s) → 2K2O(s) + 2N2(g) + 5O2(g)


A) 0.290 mol O2
B) 0.580 mol O2
C) 18.5 mol O2
D) 0.724 mol O2
E) 1.73 mol O2

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