1)wAs)=65.2%
w(O)=34.8%
As:O=x:y
x:y=65.2/75 : 34.8/16=0.86:2.175
x:y=0.86/0.86 : 2.175/0.86=1:3
AsO3
2)w(As)=75.7%
w(O)=24.3%
x:y=75.7/75 : 24.3/16=1 : 1,51
x:y=1/1 : 1.51/1=1:2
AsO2
Ответ:AsO3; AsO2.
<span>
1. NaCl + AgNO3 --> NaNO3 + AgCl</span>↓
AlCl3 + 3NaOH --> 3NaCl + Al(OH)3↓
2. Zn + 2HCl --> ZnCl2 + H2↑
2HCl + Na2CO3--> 2NaCl + H2O + CO2↑
3. C + O2 --> CO2 + Q
Fe + S --> FeS + Q
2H2SO4+Cu=>CuSO4+SO2+2H2O