How to calculate the pH of a buller solution 1) Calculate the pH of a solution prepared by dissolving 1.90 g of sodium acetate, CH3COONa, in 57.0 mL of 0.20 M acetic acid,
CH3COOH(aq). Assume the volume change upon dissolving the sodium acetate is negligible. Ka of CH3COOH is 1.75 x 10^-5
pH =

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

it's c (engineer's do their work with mechanical stuff not on any living being)