Răspuns:
Explicație:
150g xg yg
C + ZnO = Zn + CO2
81g 65g 44g
x=150 .65 : 81=120,3 g Zn
n=120,3 g : 65g/moli=1,85 moli Zn
y=150. 44 : 81=81,48 g CO2
n=81,48 g : 44g/moli=1,85 moli CO2
VCO2=1,85 g . 22,4 L/moli=41,44 L
MZnO=65 +16=81 ----->81g/moli
MCO2=12 +2.16=44 ------>44g/moli
verifica calculele!