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Analisis terhadap suatu senyawa menghasilkan 87,5%...

Analisis terhadap suatu senyawa menghasilkan 87,5% nitrogen dan sisanya hidrogen. Jika senyawa tersebut memiliki massa molekul relatif 32, maka jumlah atom hidrogen dalam 0,02 mol senyawa tersebut adalah...space

Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell percent sign space N end cell equals cell begin inline style fraction numerator n cross times Ar over denominator 32 end fraction end style cross times 100 percent sign end cell row cell 87 comma 5 percent sign end cell equals cell begin inline style fraction numerator n cross times 14 over denominator 32 end fraction end style cross times 100 percent sign end cell row n equals 2 end table end style


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell Mr space senyawa end cell equals cell 2 left parenthesis 14 right parenthesis plus n left parenthesis Ar space H right parenthesis end cell row 32 equals cell 28 plus n left parenthesis 1 right parenthesis end cell row n equals 4 end table end style


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell mol space atom space hidrogen end cell equals cell begin inline style 4 over 32 end style cross times 0 comma 02 space mol end cell row blank equals cell 0 comma 0025 space mol end cell end table end style


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell jumlah space molekul space hidrogen end cell equals cell n cross times L end cell row blank equals cell 2 comma 5 cross times 10 to the power of negative sign 3 end exponent cross times 6 comma 02 cross times 10 to the power of 23 end cell row blank equals cell 15 comma 05 cross times 10 to the power of 20 end cell end table end style


Jadi, jumlah atom hidrogen adalah begin mathsize 14px style 15 comma 05 cross times 10 to the power of 20 end style.

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