What is the formula and name of Mg + O

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

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?

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse