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0.3 g of coal sample on Kjehldahls analysis gave ammonia to just neutralise 30 mL of 0.1 N H2SO4. Calculate the percentage of nitrogen in

0.3 g of coal sample on Kjehldahls analysis gave ammonia to just neutralise 30 mL of 0.1 N H2SO4. Calculate the percentage of nitrogen in the coal sample.

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