Что такое? что случилось?
Молярная масса вещества:
M(XOH)=m(XOH)/n(XOH)
M(XOH)=M(X) + M(O) + M(H)
m(XOH)/n(XOH)=M(X) + M(O) + M(H)
15/0,1=M(X) + 16 + 1
M(X)=150-17=133 г/моль
X=Cs
1)цезий
2) H2 + S = H2s
H2+2Na+SO2+2O2 =2NaHSO3
1) Zn<span>+</span>H2SO4<span>(</span>конц<span>)-ZnSO4+</span>H2<span>S+</span>H2<span>O</span>
<span> <span>2</span>H2S<span> + </span>O2<span> = </span>2S<span> + 2</span>H2<span>O</span></span>
<span><span> H2 + S = H2s</span></span>
<span><span> <span>2</span>H2<span> </span>S+<span> ЗО2(изб) = 2</span>H2<span> О + 2</span>SO2</span></span>