someone please help me answer this disgusting miserable question i dont understand how any of this connects give me context please

11)Copper-64 decays in such a way that concentration versus time data collected resulted in a straight line for a plot of ln[A] versus time. If the half- Chapter 14 and life 12.8 days chapter 21 a) Determine the rate law b) What is the slope of the line c) How long would it take for 25% of the sample to decay d) Write the reaction for the following decays of copper-64: alpha, beta, and electron capture 4) Consider making a 500.mL buffer of pH=5.00 using 1.00M solutions of both acetic acid (CH3CO2H) and the sodium salt of its conjugate base. a) What volumes of acetic acid solution and the conjugate base solution are required? b) What the pH of the buffer solution after adding 5.0mL of 0.10MBa(OH)2 ? c) What is the pH after adding the same amount of base as (b) in distilled water