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What is the mole fraction of water in a solution that contains 8.4mol of ethanol (C2H5OH) and 2.5mol of water? a. 0.11 b. 0.28 c. 1.30 d. 0.87 e. 0.23 A chemical reaction that is first-order in X (reactant) is observed to have a rate constant of 2.20102s1. If the initial concentration of X is 1.0M,what is the concentration of X affer 186s ? 0.0.050M0.0.017M0.082Md.0.066M0.025M The oxidation of ammonia produces nitrogen and water via the following reaction: 4NH3(g)+3O2(g)>2N2(g)+6H2O(l) Suppose the rate of formation of H2O(l) is 3.0mol/(Ls). Which of the following statements is true? a. The rate of formation of N2 is 1.3mol/Ls). b. The rate of consumption of NH3 is 2.0mol/(L - s). c. The rate of consumption of NH3 is 0.50mol/(Ls). d. The rate of formation of N2 is 2.0mol/(Ls). e. The rate of consumption of O2 is 2.0mol/(Ls)