👤
a fost răspuns

O solutie de apa oxigenata contine 10,9545%. Calculati concentratia procentuala a acestei solutii.

Răspuns :

BabyAlina
H2O2-apa oxigenata

M(masa moleculara)=
=2•A H+2•A O
=2•1+2•16
=2+32
=34 u.a.m

34gH2O2...2gH...32gO
100gH2O2...y gH...x gO.—————————————
=>x=32•100/34
=3200/34
=94,11% O

=>y=2•100/34
=200/34
=5,88% H

Alte intrebari