Răspuns:
CALCULEZ MASA DE SOUTIE
ro=m/V---->: ms= 10000 mlx0,94gm/l= 94x10²g
calcule masa de alcool din solutie
c=mdx100/ms---> md= 40x94x10²/100g= 3760g
calculez masa de glucoza pura, stiind
miu,glucoza= 180g/mol miu,alcool etilic= 46g/mol
C6H12O6----> 2C2H6O+2CO2
180g....................2x46g
3760g..................x
x= m= 7356,5g
calculez masa de glucoza impura,
p= m,px100/mi---> m,i= 7356,5x85/100g= 8654,73g
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Explicație: