18. How many moles of nitrogen are formed when 58.6 g of KNO3 decomposes according to the following reaction? The molar mass of KNO3 is 101.11 g/mol. 4 KNO3(s)-2K20(s) + 2 N2(g) + 5 O2(g) A. 0.290 mol N2 B. 0.580 mol N2 c. 18.5 mol N2 D. 0.724 mol N2 E. 1.73 mol N2