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The equilibrium constant, K, is 2.4 x 103 at a certain temperature for the reaction: 2NO(g) ⇌ N2(g) + O2(g) For which of the following sets of conditions is the system at equilibrium? A.  1.0-L flask contains 0.024 mol NO, 2.0 mol N2, and 2.6 mol O2. B.  2.0-L flask contains 0.032 mol NO, 0.62 mol N2, and 4.0 mol O2. C.  3.0-L flask contains 0.060 mol NO, 2.4 mol N2, and 1.7 mol O2. D. None of these conditions are at equilibrium  

What is the molar concentration of a solution formed by dissolving 300.0 mg of Glucose, C6H12O6, to make 150.0 mL of solution? Molar mass:C6H12O6: 180.18 g/mol   A. 0.360 M B. 11.1 M C. 1.67 x 10-3 M D. 1.11 x 10-2 M

Which ion has the smallest radius? A. Cl- B. S2- C. Mg2+ D. Na+  

What volume of a 1.25 M aqueous solution of sodium chloride is needed to prepare 100.0 mL of a solution that is 0.25 M? A. 16.0 mL B. 20.0 mL C. 50.0 mL D. 80.0 mL

If the diagram shown below is representative of the particles in a sample of ideal gases, which statement is true?   A. A has the lowest partial pressure B. B has the lowest partial pressure C. C has the lowest partial pressure  D. All partial pressures are equal

Which statements are true? I. Atoms with both a sigma- and pi-bond between them are stronger than atoms with only a sigma-bond between them. II. A molecule that is sp hybridized has a trigonal planar geometry III. Rotation is restricted between two atoms containing both sigma and pi bonds between them. IV. The molecule CH4 contains both sigma and pi bonds between the Carbon and Hydrogen   A. I, II, and III B. II and IV C. I and III D. All are correct

Which process has a

Consider the reaction: 2 NO2 (g)  +  Cl2 (g)  

What is the standard enthalpy change for the following reaction? 3 NO2 (g)  +  H2O (l)  

Consider the following reaction at elevated temperature: K = 15.0 A reaction mixture initially contains all three gases in equal concentrations.  Which statement is true of this reaction mixture?   A. Q > K; the reaction will proceed toward the reactants. B. Q < K; the reaction will proceed toward the products C. Q = K; the reaction is in equilibrium D. Not enough information provided