ZnO
<span>M(ZnO)=81 г/моль
</span><span>w(Zn)=65/81*100%=80%
</span>w(O)=100%-80%=20%
NaCl
M(NaCl)=58 г/моль
w(Na)=23/58*100%=40%
w()=100%-40%=60%
CO
M(CO)=28 г/моль<span>
w(O)=16/28*100%=43%
w(C)=12/28*100%=57%
</span>
BaO
M(BaO)=153 г/моль<span>
w(Ba)=137/153*100%=90%
w(O)=100%-90%=10%</span>
AgCl
M(AgCl)=143 г/моль
<span>w(Ag)=108/143*100%=76%</span>
<span>w(Cl)=100%-76%=24%</span>
Fe+Al=FeAl...........................