Draw schematically the diffusion coefficient d in a log scale versus 1/t (t is temperature in kelvin) for diffusion (i) within crystal bulk, (ii) along grain boundaries, and (iii) on crystal surfaces. briefly explain the reasons why the slopes are different.

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.

Why do lunar and solar eclipse not happen every month

How many moles are in 1.26*10^24 particles in significant figures