2)2СuO=2Cu + O2
3)2Al203 = 4al+ 3o2
1)2hg2o = 4hg + o2
https://ru-static.z-dn.net/files/d0d/3850a67e79a7ad6da61136c4dc9e9aca.jpg
P2O5 + 3H2O = 2H3PO4
14*196/142=19,32
98 ____1моль H3PO4
19,32 x
x=19,32*1/98=0,19 моль
m(Br2)=200*0,016=3,2г;n(Br2)=3,2:160=0,02моль
MC6H12O6=200·0.9=180kg
180kg xkg
C6H12O6=2C2H5OH+2CO2
180g 92g
x=180·92/180=92kg
92kg x²kg
C2H5OH+[O]=CH3COOH
46g 60g
x²=92·60/46=120kg