Problem: Sodium reacts with oxygen to form sodium oxide and has the following balanced chemical equation: 4 Na + O2 → 2 Na2O. How many mole(s) of oxygen gas (O2) are needed to react with 2.0 moles of Na?a) 0.5 molesb) 3.0 molesc) 1.0 molesd) 2.0 molee) 4.0 moles

FREE Expert Solution

Balanced chemical equation: 

4 Na + O→ 2 Na2O


moles Na (mole-to-mole comparison) → moles O2

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Problem Details

Sodium reacts with oxygen to form sodium oxide and has the following balanced chemical equation: 4 Na + O→ 2 Na2O. 

How many mole(s) of oxygen gas (O2) are needed to react with 2.0 moles of Na?

a) 0.5 moles

b) 3.0 moles

c) 1.0 moles

d) 2.0 mole

e) 4.0 moles

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