January 2019 1 5 Report
Batangan emas 100gr dengan kadar 24 karat. agar emas tersebut kadarnya menjadi 20 karat , berapa gram perak yang harus d campurkan? (rho emas: 19,3 gr/cm³ , rho perak: 10,5 gr/cm³) ubah jawabannya dlm satuan internasional ya .. mohon bantuaannya,, trimakasihh ..
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