Asked by j
The molar mass of O2 is 32.0 g/mol. What mass, in grams, of O2 is required to react completely with 4.00 mol of Mg?
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GPT-5 mini
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Balanced equation: 2 Mg + O2 → 2 MgO.
Mole ratio: 2 mol Mg : 1 mol O2, so for 4.00 mol Mg you need 4.00 × (1/2) = 2.00 mol O2.
Mass = 2.00 mol × 32.0 g/mol = 64.0 g O2.
Mole ratio: 2 mol Mg : 1 mol O2, so for 4.00 mol Mg you need 4.00 × (1/2) = 2.00 mol O2.
Mass = 2.00 mol × 32.0 g/mol = 64.0 g O2.
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