How the atmospheric air can be used, besides our breathe?

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

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 metals are called noble metals