Pertanyaan

Urea, amonium sulfat, dan amonium nitrat digunakan sebagai pupuk nitrogen. Tentukan kadar nitrogen dalam masing-masing pupuk tersebut.

J. Siregar

Master Teacher

Mahasiswa/Alumni Universitas Negeri Medan

Jawaban terverifikasi

Pembahasan

Untuk menentukan kadar unsur dalam suatu senyawa, dapat digunakan rumus: Dalam senyawa urea, , terdapat 2 unsur nitrogen (N). - Dalam senyawa amonium sulfat , terdapat 2 unsurnitrogen (N). - Dalam senyawa amonium nitrat terdapat 2 unsur nitrogen (N).

Untuk menentukan kadar unsur dalam suatu senyawa, dapat digunakan rumus:

$begin mathsize 14px style kadar space unsur space equals fraction numerator indeks space x space Ar space unsur over denominator Mr space senyawa end fraction space x space 100 percent sign end style$

Dalam senyawa urea, , terdapat 2 unsur nitrogen (N).

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$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell kadar space Nitrogen space end cell equals cell fraction numerator indeks space x space Ar space unsur over denominator Mr space C O open parentheses N H subscript 2 close parentheses subscript 2 end fraction space x space 100 percent sign end cell row cell kadar space Nitrogen space end cell equals cell fraction numerator 2 space x space 14 over denominator 60 end fraction space x space 100 percent sign space equals space 46 comma 67 percent sign end cell end table end style$

- Dalam senyawa amonium sulfat , terdapat 2 unsur nitrogen (N).

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- Dalam senyawa amonium nitrat terdapat 2 unsur nitrogen (N).

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