Propanoic acid has a Ka­ of 1.34 x 10^-5. What is the pH if 500 mL of 0.012 M propanoic acid solution is titrated with 250.00 mL of 0.010 M NaOH?

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.

Idon't have a clue what this