Răspuns:
1.
MC=12g/mol
MCO2=12+2×16=44g/mpl
12g 44g
C + O2→CO2
xg 88g
x=88×12/44=24g C
3.
MSO2=32+2×16=64g/mol
MH2O=2×1+16=18g/mol
MH2SO3=2×1+32+3×16=82g/mol
64g 18g 82g
SO2 + H2O→ H2SO3
xg yg 164g
x=164×64/82 =128g SO2
y=164×18/82=36g H2O
Explicație: