500-100%
x-10%
x=50
50+0.5=50.5
m(H2O) = 500 грm(раствора) = 500+500 = 1000 грm(H2SO4) = 500*0.1 = 50 грw(H2SO4) = 50/1000*100%= 5%
500-100%
x-10%
x=50
50+0.5=50.5
m(H2O) = 500 гр
m(раствора) = 500+500 = 1000 гр
m(H2SO4) = 500*0.1 = 50 гр
w(H2SO4) = 50/1000*100%= 5%