kadar Nitrogen didalam pupuk urea CO(NH2)2 adalah... (Ar N=14, C=12, O=16. H=1) *dalam persen*
dimohon sekarang yaaaa:))
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= 2.14/[12+16+(2.14)+(4.1)] x 100%
= 28/60 x 100%
= 7/15 x 100%
= 46,7%