Calculam masa de carbune pur:
m = 25x96/100 m= 24kg carbune pur (adica C -carbon)
Calculam masa de carbune pur ce s- a folosit:
mC = 24x80/100 mC =19,2Kg
Ecuatia reactiei este
12 44
C + O₂ → CO₂ 12/19,2 = 44/x adica x = 19,2 x44/12
19,2 x
x = 70,4Kg CO₂
Raspuns corect b)