40/250
+10
9 лет назад
Химия
5 - 9 классы
a)H2S.
Mr(H2S)=2+32=34
w(H)=2/34=0,06(6%)
w(S)=32/34=0,94(94%)
б)H2SO3.
Mr(H2SO3)=2+32+16*3=82
w(H)=2/82=0.02(2%)
w(S)=32/82=0.39(39%)
w(O)=48/82=0.59(59%)
в)H2SO4.
Mr(H2SO4)=2+32+16*4=98
w(H)=2/98=0.02(2%)
w(S)=32/98=0.33(33%)
w(O)=64/98=0.65(65%)
a)H2S.
Mr(H2S)=2+32=34
w(H)=2/34=0,06(6%)
w(S)=32/34=0,94(94%)
б)H2SO3.
Mr(H2SO3)=2+32+16*3=82
w(H)=2/82=0.02(2%)
w(S)=32/82=0.39(39%)
w(O)=48/82=0.59(59%)
в)H2SO4.
Mr(H2SO4)=2+32+16*4=98
w(H)=2/98=0.02(2%)
w(S)=32/98=0.33(33%)
w(O)=64/98=0.65(65%)