Respuesta :

Answer: the balanced equation for the reaction between Mg and O₂ is as follows

2Mg + O₂ --> 2MgO

stoichiometry between Mg and O₂ is 2:1

number of Mg reacted - 4.00 mol

if 2 mol of Mg reacts with 1 mol of O₂

then 4.00 mol of Mg requires - 1/2 x 4.00 = 2.00 mol of O₂

then the mass of O₂ required - 2.00 mol x 32.0 g/mol = 64.0 g

64.0 g of O₂ is required for the reaction

Explanation:

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