Răspuns:
Explicație:
1.
MH2O=2+16=18-------> 18g/moli
MCO2= 12+2.16=44-------> 44g/moli
MAl2S3= 2.27 + 3.32=150-------> 150g/moli
2.
n= m : M ; m= n . M
a. n= 88g : 44g/moli= 2 moli CO2
b. m= 8moli . 18g/moli=144g H2O
c. n= 150g : 150g/moli= 1mol Al2S3