0.80g of impure (NH(4))(2) SO(4) was boi...

0.80g of impure `(NH_(4))_(2) SO_(4)` was boiled with 100mL of a 0.2N NaOH solution was neutralized using 5mL of a `0.2N H_(2)SO_(4)` solution. The percentage purity of the `(NH_(4))_(2)SO_(4)` sample is:

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0.80g of impure `(NH_(4))_(2) SO_(4)` was boiled with 100mL of a 0.2N NaOH solution was neutralized using 5mL of a `0.2N H_(2)SO_(4)` solution. The percentage purity of the `(NH_(4))_(2)SO_(4)` sample is:

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