Объяснение:
m(H2SO4)=25г
m(H2O)=175г
w(H2SO4)=?
w(H2SO4)=m(H2SO4)×100%/mрозч= m(H2SO4)×100%/(m(H2SO4)+m(H2O))= 25×100%/(25+175)=12.5%
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Объяснение:
m(H2SO4)=25г
m(H2O)=175г
w(H2SO4)=?
w(H2SO4)=m(H2SO4)×100%/mрозч= m(H2SO4)×100%/(m(H2SO4)+m(H2O))= 25×100%/(25+175)=12.5%