Calculate the ph for a 0.01 m hcl solution

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

Calculate the ph of a .10m nh4cl solution. the kb value for nh3 is 1.8×10^-5