Balanced chemical equation:
4 Na + O2 → 2 Na2O
moles Na (mole-to-mole comparison) → moles O2
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 moles
b) 3.0 moles
c) 1.0 moles
d) 2.0 mole
e) 4.0 moles
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