How many moles of Na are required for the reaction of 0.80 moles of Na2O?
From the balanced equation, we can see that 4 moles of Na are required to form 2 moles of Na2O. Therefore, 0.80 moles of Na2O would require:
0.80
moles Na2O
×
4
moles Na
2
moles Na2O
= 1.6 moles Na
So, 1.6 moles of Na are required for the reaction of 0.80 moles of Na2O.