Answer:
21.344%
Explanation:
For the given chemical reaction, 8 moles of the reactant should produce 4 moles of [tex]Na_{2}O[/tex]. However, 195 g of [tex]Na_{2}O[/tex] was produced instead. The molar mass of [tex]Na_{2}O[/tex] is 61.9789 g/mol.
Thus, the moles of [tex]Na_{2}O[/tex] produced = 195/61.9789 = 3.1462 moles
The percent error = [(Actual -Experiment)/Actual]*100%
The percent error = [(4.00 - 3.1462)/4.00]*100% = (0.85376/4.00)*100% = 21.344%