Under certain conditions the rate of this reaction is zero order in dinitrogen monoxide with a rate constant of 0.0022 M s 2N,0 (g) - 2 N, (g) +O, (g) Suppose a 400. mL flask is charged under these conditions with 500. mmol of dinitrogen monoxide. After how much time is there only 250. mmol left? You may assume no other reaction is important. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits. db olo

Suppose a 350. mL flask is charged under these conditions with 100. mmol of hydrogen iodide. After how much time is there only 50.0 mmol left? You may assume no other reaction is important. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits.

Chlorine dioxide, CIO₂, is a reddish-yellow gas that is soluble in water. In basic solution it gives CIO3 and ClO₂ ions. 2 CIO₂(aq) + 2 OH(aq) → CIO3(aq) + ClO₂ (aq) + H₂O(1) To obtain the rate law for this reaction, the following experiments were run and, for each, the initial rate of reaction of ClO₂ was determined. Use the data here to determine the order of the reaction for CIO₂ and OH, and the value of the rate constant. [CIO2]init [OH Jinit Initial Rate, mol/(Los) Exp. 1 0.030 Exp. 2 0.060 Exp. 3 0.030 Order for CIO₂: Order for OH": Rate constant = 0.030 0.030 0.060 0.0062 0.0248 0.0124

Under certain conditions the rate of this reaction is zero order in ammonia with a rate constant of 0.0029 M·s : 2 NH3 (g) → N, (g)+ 3 H, (g) Suppose a 3.0 L flask is charged under these conditions with 400. mmol of ammonia. After how much time is there only 200. mmol left? You may assume no other reaction is important. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits. х10