If an atom of calcium has two dots for its Lewis structure, then it means that this atom has... O 18 electrons
O 2 valence electrons in shell 4
O 2 valence electrons in shell 1
O three shells, only

Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10^-3 m and k for the dissociation is 1.86x10^-5. ch3cooh(aq)+h2o(> h3o^+(aq)+ch3coo^-(aq)

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?