Amagnesium ion, mg2+, with a charge of 3.2×10−19c and an oxide ion, o2−, with a charge of −3.2×10−19c, are separated by a distance of 0.25 nm. how much work would be required to increase the separation of the two ions to an infinite distance?

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?