When heated, lithium reacts with nitrogen to form lithium nitride: 6li(s) + n2(g) → 2li3n(s). a) what is the theoretical yield of li3n in grams when 12.3 g of li is heated with 33.6 g of n2? b) if the actual yield of li3n is 5.45 g, what is the percent yield of the reaction?

hi,

the capital city of australia is canberra.

not clear

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.