21.7g xmol
HgO+ H2 =Hg+H2O
216 1mol
x=21.7·1/216=0.1mol
14.4g x²mol
2MoO3 +3H2=3H2O+2Mo
288g 3mol
x²=14.4·3/288=0.15mol
nH2=0.1+0.15=0.25mol
AlCl3, SO3, Ba(OH)2, ZnCO3, CuOH, CaO
3NaOH+AlBr3=3NaBr+Al(OH)3↓
3Na^+ + 3OH^- + Al^3+ +3Br^-= 3Na^+ +3Br^- +Al(OH)3↓
Al^3+ +3OH^- = Al(OH)3↓
Пропорция
200 ----------100
х ----------10 => X = 20 (200*10/100)