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Jumlah mol dari 29,8 gram amonium fosfat ( NH 4 ​ ) 3 ​ PO 4 ​ adalah ... ( A r ​ N = 14 g mol − 1 , H = 1 g mol − 1 , P = 31 g mol − 1 , O = 16 g mol − 1 )

Jumlah mol dari 29,8 gram amonium fosfat  adalah ...

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L. Avicenna

Master Teacher

Mahasiswa/Alumni Institut Teknologi Bandung

Jawaban terverifikasi

Jawaban

mol amonium fosfat adalah 0,2 mol.

mol amonium fosfat adalah 0,2 mol.space 

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Jadi mol amonium fosfat adalah 0,2 mol.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell mol space open parentheses N H subscript 4 close parentheses subscript 3 P O subscript 4 end subscript end cell equals cell fraction numerator massa space open parentheses N H subscript 4 close parentheses subscript 3 P O subscript 4 over denominator Mr space space open parentheses N H subscript 4 close parentheses subscript 3 P O subscript 4 end fraction end cell row cell mol space open parentheses N H subscript 4 close parentheses subscript 3 P O subscript 4 end cell equals cell fraction numerator massa space open parentheses N H subscript 4 close parentheses subscript 3 P O subscript 4 over denominator left curly bracket left parenthesis 3 cross times A subscript r space N right parenthesis plus left parenthesis 12 cross times A subscript r space H right parenthesis plus left parenthesis 1 cross times A subscript r space P right parenthesis plus left parenthesis 4 cross times A subscript r space O right parenthesis right curly bracket end fraction end cell row cell mol space open parentheses N H subscript 4 close parentheses subscript 3 P O subscript 4 end cell equals cell fraction numerator 29 comma 8 space g over denominator left curly bracket left parenthesis 3 cross times 14 space g space mol to the power of negative sign 1 end exponent right parenthesis plus left parenthesis 12 cross times 1 space g space mol to the power of negative sign 1 end exponent right parenthesis plus left parenthesis 1 cross times 31 space g space mol to the power of negative sign 1 end exponent right parenthesis plus left parenthesis 4 cross times 16 space g space mol to the power of negative sign 1 end exponent right parenthesis right curly bracket end fraction end cell row cell mol space open parentheses N H subscript 4 close parentheses subscript 3 P O subscript 4 end cell equals cell fraction numerator 29 comma 8 space g over denominator left parenthesis 42 space g space mol to the power of negative sign 1 end exponent plus 12 space g space mol to the power of negative sign 1 end exponent plus 31 space g space mol to the power of negative sign 1 end exponent plus 64 space g space mol to the power of negative sign 1 end exponent right parenthesis end fraction end cell row cell mol space open parentheses N H subscript 4 close parentheses subscript 3 P O subscript 4 end cell equals cell fraction numerator 29 comma 8 space g over denominator 149 space g space mol to the power of negative sign 1 end exponent end fraction end cell row cell mol space open parentheses N H subscript 4 close parentheses subscript 3 P O subscript 4 end cell equals cell 0 comma 2 space mol end cell row blank blank blank end table end style 

Jadi mol amonium fosfat adalah 0,2 mol.space 

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