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Question: The following reaction was monitored as a function of time:
A ---> B + C
A plot of ln[A] vs. time yields a straight line with slope -0.0045/s.
a. What is the value of the rate constant (k) for this reaction at this temperature?
b. Write the rate law for the reaction.
c. What is the half-life?
d. If the initial concentration of A is 0.250 M, what is the concentration after 225 s?
If 4.00 grams of NaOH is added to 1.00 L of the solution in #1 (assume no volume change), what is the pH of the resulting solution
You need to produce a buffer with pH = 4.1 by dissolving a weighed amount of sodium formate (FW = 68.0072) in 500-mL of 0.45-M formic acid
What is the most important effect of antisymmetrization in electon-electron interaction? Where did antisymmetrization come from? Explain from different statistics of distinguishable particle, indistinguishable particle
An isotonic solution contains 0.95% by mass per volume. Calculate the percent mass per volume for isotonic solutions containing each of the following solutes at 50 degree Celsius . Assume a van't Hoff factor of 1.9 for all ionic solutes.
M+ is added to a solution of 0.0035 M X- and 0.0016 M Z-. MX has Ksp = 8.2 × 10^-9, while MZ has Ksp = 1.7 × 10^-10. What percentage of the Z- is still in solution (not precipitated) when the MX just starts to precipitate? Answer in units of %.
If 10.0mL of acetic acid, CH3COOH, is diluted with water to a total volume of 200.0mL, what is the percent by volume of acetic acid in the solution.
What is the pH of this solution? (Include activity coefficients in your calculation.) What is the fraction of dissociation of butanoic acid in this solution?
Antimony pentafluoride (SbF5) is a member of a class of molecules called super acids. What is the predicted structure of the molecule
Write the balanced equation and determine the standard cell potential for each of the following cell notatio
Suppose a flask containing gaseous nitrogen is irradiated with 24-nm light. Utilizing the following information, explain what species can form in the flask during irradiation
Please give an example of food best cooked 'hot and fast' and an example of 'low and slow' and explain the chemical and physical changes that the cooking method brings about.
What are the relative populations of these levels at the boiling if the degeneracy level is 2j+ 1? Is the ground state most highly populated level?
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