7. Nitric acid (NO) reacts with oxygen gas to form nitrogen dioxide (NO2), a dark brown gas: 2NO(g) + O2(g) → 2NO2(In one experiment 0.886 mole of NO is mixed with 0.503 mol of O2. a.Calculate which of the two reactants is the limiting reagent. (5 points) g ) b.Calculate also the number of moles of NO2produced. (5 points) c.What reactant is left over and how much of it is left over?(5 points) 8.Propane (C3H8) is a component of natural gas and is used in domestic cooking andheating. It burns according to the following reaction:C3H8+ O2→ CO2+ Ha.Balance the equation representing the combustion of propane in air. (5 points) 2 O 2 O b.How many grams of carbon dioxide can be produced by burning 20.0 pounds of propane, the typical size of a BBG grill propane tank? Assume that oxygen is the excess reagent in this reaction. (5 points) 3 Copyright © 2017 by Thomas Edison State University . All rights reserved.
9.Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and in the production of aluminum metal. It is prepared by the reactionCaF2+ H2SO4→ CaSO4+ In one process 6.00 kg of CaF2are treated with an excess of H2SO4and yield 2.86 kgof HF. Calculate the percent yield of HF. (5 points) 2HF
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