We’re being asked to determine the number of moles of oxygen gas (O2) that are needed to react with 2.0 moles of metallic sodium (Na).
The balanced equation is the following:
4 Na(s) + O2(g)→ 2 Na2O(s)
Sodium reacts with oxygen to form sodium oxide and has the following balanced chemical equation: 4 Na + O2 → 2 Na 2O.
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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