X g O
2 moli trioxid de carbon
3 moli COD
4 moli Mg O
N2O3
MN2O3=2*14+3*16
= 28+48
= 76g
2 mOli...........x g
n=m/Mai
m=n*M=2*76=152 g
76 g N2O3.......48 g O
152 g.............. x
X=152*48/76=96 g O
Mco2=Ac+2*Ao=12+2*16=12+32=44 g
m=n*M=3*44=132 g
44g COD. .......32g O
132 g........x
X=132*32/44=96g O
M MgO=AMg+AO=24+16=40g
m=n*M=4*40=160g
40g MgO......16gO
160g..........x
X=160*16/40=64gO