0.50 moles of oxygen gas will react.
Balanced chemical eqation for reaction of calcium with oxygen:
2Ca + O₂ → 2CaO
n(Ca) = 1.0 mol; amount of calcium
From balanced chemical reaction, we can see that 2 moles of calcium reacts with one mole of oxygen gas. Ratio of moles is 2 : 1.
n(Ca) : n(O₂) = 2 : 1; ratio of the amount of substance of calcium and oxygen gas
n(O₂) = n(Ca) / 2; two times less amount of oxygen than calcium
n(O₂) = 1.0 mol / 2
n(O₂) = 0.5 mol; amount of oxygen gas needed for this chemical reaction.
More about stoichiometry: brainly.com/question/16060223
#SPJ4
