If mass of oxygen is 0.5 g, how much product K2O2 is formed? What is the reaction?
+ O2 ---> K2O2
As you can see: 1
mole of O2 produces 1 mole of K2O2
weight of O2 is 32 g/mol
weight of K2O2 is 110 g/mol
translate mass of O2 into moles : mole O2 = 0.5 g / 32
g/mol = 0.0156 mol
translate given moles into mass of K2O2 (O2 ratio to K2O2 = 1:1)
K2O2 = o.oo92 mol x 110 g/mol = 1.72 g
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