Random error is error associated with the precision limits of the measuring device; it causes some alues in a data set to be larger than theoretical value and some to be smaller. Systematic error is onsistent, repeatable error associated with flawed instrument design or user error. When ystematic error is present, all values in a data set are larger or smaller than the theoretical. . The volume of a pipet was experimentally determined, resulting in the following data set. The theoretical volume is 10.00 mL. Does the data set show evidence of random error, systematic error, or both? Why? 10.03 mL 9.99 mL 9.98 mL 10.02 mL . The concentration of an NaOH solution was experimentally determined, resulting in the following data set. The theoretical concentration is 0.1031 M. Does the data set show evidence of random error, systematic error, or both? Why? 0.1050 M 0.1055 M 0.1045 M 0.1047 M

What is the reactant side? Left or right?

2. You may have clearly been able to distinguish the difference in the time required for the initial reaction of HCI with zinc in the temperature study. However, after a very brief period, the three test tubes are reacting at the same rate. Explain why this was (or was not) expected. (Hint: Your careful observation of the test tubes may be required.) Edit Answer

Of the following, all are valid units for a reaction rate except ______ .   mole/hour         molarity/second         gram/second         mole/liter

Select the transition for the reaction between ethyl iodide and sodium acetate (CH3C02Na)

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An experiment was performed in a similar manner as Experiment 4 (The Hydrolysis of t-Butyl Chloride). The following data was obtained: Total Time (s) Volume NaOH Titrant used (mL) 46 2.01 91 3.97 131 5.98 175 8.03 220 10.00 266 11.99 311 14.01 357 15.97 401 17.98 450 20.02 Final Volume NaOH to fully react sample: 85.01 mL Assume the proposed reaction mechanism in the experimental procedure is correct. Based on the above measurements, how many minutes would it take for the solution to reach 81.0% completion? Round your final answer to two decimal places.

Would this equation shift left or right?

Using the concept of collisions and molecular motion, explain why mixing a reaction mixture can speed up the rate of reaction.