Cu- медь............................
<span>2Mg+O2=2MgO</span>
<span><span>MgO+2HCl=MgCl2+H2O
<span>MgCl2+2KOH=Mg(OH)2+2KCl</span></span></span>
<span><span><span><span>Mg(OH)2+2HNO3=Mg(NO3)2+2H2O</span></span>
</span></span>
С2Н5ОН = С2Н4 + Н2О
<span>46 -----22,4 </span>
<span>4,6 ----х </span>
<span>х = 2,24 л (теор. ) </span>
<span>2,24 ----100% </span>
<span>х -----------90% </span>
<span>х = 2,016 л</span>
0.005CxHy+O2=0.02CO2+0.025H2O
112мл=0.112 дм3
448мл=0.448дм3
n(CxHy)=0.112/22.4=0.005
n(CO2)=0.448/22.4=0.02
n(H2O)=0.025
0.02:0.005=4 C
0.025*2:0.005=10 H
M(CxHy)=58
C4H10