作者capinot (jj72)
看板Chemistry
標題有獎徵答
時間Mon Aug 22 15:44:08 2005
獎品 400 P幣
A 0.7834g sample of iron ore containing 18.88 % Fe was analyzed
gravimetrically by precipitate with ammonia and igniting to Fe2O3
If the final precipitate also contains 0.0149g of Al2O3 by mistake ;
calculate the absolute error in the percentage of iron
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