1. A first-order reaction has a half-life of 34 minutes. What is the rate constant for this reaction?
2. When an ideal gas is allowed to expand isothermally, which one of the following is true?
3. Which of the following is a balanced chemical reaction?
4. How many electrons, neutrons, and protons are in an atom of Cr?
5. A student has a liter of a 0.100 M solution of a strong acid. To prepare a buffer, this should be mixed with
