Ammonia obtained from 0.4 g of organic substance by Kjeldahl's method was absorbed in 30 mL of 0.25 M H_(2)SO_(4). The excess of the acid was neutralized by the addition of 30 mL of 0.2 M NaOH. Calculate the percentage of nitrogen in the substance.

Ammonia obtained from 0.4 g of organic substance by Kjeldahl's method

1.	Ammonia obtained from 0.4 g of organic substance by Kjeldahl's method was absorbed in 30 mL of 0.25 M H_(2)SO_(4). The excess of the acid was neutralized by the addition of 30 mL of 0.2 M NaOH. Calculate the percentage of nitrogen in the substance.
Answer» ANSWER :`31.5%`