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abdurrafay360
For four moles of mg we need 2 moles of oxygen to react completely
Cricetus

The number of moles of [tex]O_2[/tex] gas needed to react will be "2.0 moles".

According to the question,

Numbers of Mg,

  • 4.0 moles

Now,

→ [tex]4.0 \ moles \ of \ Mg\times \frac{1 \ mole \ O_2}{2 \ moles \ Mg}[/tex]

→ [tex]2.0\times 1[/tex]

→ [tex]2.0 \ moles[/tex]

Thus the above  number of moles of oxygen gas is correct.

Learn more about oxygen here:

https://brainly.com/question/11110442

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