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2014-06-16T10:39:46+07:00
PERSENTASE N =Ar N/ Mr (CO(NH2)2*100 persen=28/60*100 persen=46.67 persen
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2014-06-16T10:44:13+07:00
Persen unsur N yang terdapat dalam urea (CO(NH2)2 = Ar N / Mr (CO(NH2)2 x 100%
= 28/60 x 100% = 46,67%