In a combustion reaction, 500 mol of propane (c3h8) is burned with 14,000 mol of air to produce 600 mol of co2 and 400 mol of co. what was the percent excess air?

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.