Question

Module 9 5. 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. Half Credit for the right answer and half credit for showing work 4 KNO3(s) → 2 K20(s) + 2 N2(g) + 5 O2(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

Answer 1

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Given Equation Ps 1 4 KNO3 (6) 26,0 6, + 2N269 + 50266) 4 moles of KNO3 (8) Glves 5 moles of 02 (9) :. I mole of IS NO316) Grives at moles of 026) 101.10 gof KNO3(s) - moles of a Gives -&15x58.6 moles 20.00 - 58.69 of ES NO3 - 4x10l. 10 Glves. i 58.69 of KNO3 (6) i correct 0.724 moles of ® 0.724 mol O2 option