Jumlah mol dari 29,8 gram amonium fosfat (NH4)3PO4 adalah ... (ArN=14gmol−1,H=1gmol−1,P=31gmol−1,O=16gmol−1)

Jumlah mol dari 29,8 gram amonium fosfat (NH4)3P...

Pertanyaan

Jumlah mol dari 29,8 gram amonium fosfat $\style{font-size:14px}{{({\mathrm{NH}}_4)}_3{\mathrm{PO}}_4}$ adalah ...

$\style{font-size:14px}{({\mathrm A}_{\mathrm r}\;\mathrm N=14\;\mathrm g\;\mathrm{mol}^{-1},\;\mathrm H=1\;\mathrm g\;\mathrm{mol}^{-1},\;\mathrm P=31\;\mathrm g\;\mathrm{mol}^{-1},\;\mathrm O=16\;\mathrm g\;\mathrm{mol}^{-1})}$ $\;$

L. Avicenna

Master Teacher

Mahasiswa/Alumni Institut Teknologi Bandung

Jawaban terverifikasi

Jawaban

mol amonium fosfat adalah 0,2 mol. space

Pembahasan

$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.