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Using the below chemical equation, how many moles of magnesium are needed to react with 0.10...

Using the below chemical equation, how many moles of magnesium are needed to react with 0.10 moles of oxygen gas? The molar mass of oxygen gas is 31.998 grams per mole and the molar mass of magnesium is 24.305 grams per mole. Make sure to include the correct unit symbol with the answer choice.

2Mg + O2 →→ 2MgO

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Answer #1

From the balanced equation we can say that

1 mole of O2 requires 2 mole of Mg so

0.10 mole of O2 will require

= 0.10 mole of O2 *(2 mole of Mg / 1 mole of O2)

= 0.20 mole of Mg

Therefore, the number of moles of Mg required would be 0.20 mole

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