Дано сr₂(so₄)₃·6h₂o найти: w( w( w( w( m(сr): m(s): - вопрос №63491766 от nataliyapotehi 29.02.2020 10:17

Question

Химия: Дано сr₂(so₄)₃·6h₂o найти: w( w( w( w( m(сr): m(s): m(o): m(h)

nataliyapotehi · Answer

Mr(Сr₂(SO₄)₃·6H₂O)=52×2+((32+16×4)×3)+(6×(1×2+16))=500 W(Cr)=52*2/500*100=10,4% m(Cr)=52*2=104 W(S)=32*3/500*100=19,2% m(S)=32*3=96 W(O)=16*4*3+16*6=288/500*100=57,6% m(O)=16*4*3+16*6=288 W(H)=1*2*6=12/500*100=2,4% M(H)=1*2*6=12...