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How many grams of oxygen are needed to react with 21.0 g of Mg?
Wiki User
∙ 11y ago
13.8 g
Wiki User
∙ 11y ago
The balanced chemical equation for the reaction between Mg and O2 is 2Mg + O2 -> 2MgO. This equation shows that 1 mole of Mg reacts with 1 mole of O2. The molar mass of O2 is 32 g/mol. Therefore, 21.0 g of Mg will react with 16.0 g of O2, which is 0.5 moles of O2.
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When you resubmit your question please indicate which gas is of interest to you.
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