Determine the concentration of C5H5N that would produce a solution with a pH of 9.17.

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?

Ab c or d ? i’m not sure what the answer is