2Al + 6HCl = 2AlCl3 + 3H2
8.1/54 = x/2
x = (8.1*2)/54 = 0.3 моль
8.1/54 = y/267
y = (8.1*267)/54 = 40.05 (г)
8HNO2+K2S=S+2KNO3+6NO+4H2O
6,6г хг
СО2 ---С
44г 12г х=6,6*12/44=1,8г n(C)=1.8/12=0.15
2,7г уг
Н2О---Н2
18г 2г у=2,7*2/18=0,3г n(H)=0.3/1=0.3
4,5-(1,8+0,3)=2,4г О n(O)=2.4/16=0.15
0.15:0.3: 0.15 = 1:2:1 M(CH2O)=30 M=15*2=30
HC≡CH + H2O = H3C-C(=O)-H
H2C=CH2 + 3O2 = 2CO2 + 2H2O