The chemical equation below shows the burning of magnesium (Mg) with oxygen (O2) to form magnesium oxide (Mgo)
2Mg + O2 → 2Mgo
The molar mass of Oz is 32.0 g/mol. What mass, in grams, of Oz is required to react completely with 4.00 mol of Mg?
2.00
64.0
128
256

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