Which of the following contribute(s) to most of the mass of an atom? O A) Protons and electrons
B) Protons only
C) Protons and neutrons
OD) Neutrons only

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. a solution containing 3.50 g of sodium carbonate is mixed with one containing 5.00 g of silver nitrate. how many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present after the reaction is complete?