1.) You have 4.2 moles of magnesium (Mg). How many atoms of magnesium do you have? 2.) You have a sample of 54.9 grams of sodium (Na). How many moles is this?

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

passing a magnet thought the

mixture , because iron gets attracted to magnet .