Question

Problema chimie simpla (imagine mai jos)

Answer 1

C+O₂=CO₂
Masa molara CO₂=12+2*16=44g/mol

x=masa de CO₂ obtinuta
x=2.4*44/12
x=8.8g CO₂

CO₂+Ca(OH)₂=CaCO₃+H₂O
Masa molara CaCO₃=40+12+3*16=100g/mol
Masa molara H₂O=2*1+16=18g/mol

y=masa de CaCO₃ obtinuta
y=8.8*100/44
y=20g CaCO₃

1mol..........................100g CaCO₃
z moli........................20g
z=20*1/100=0.2moli CaCO₃

w=masa de H₂O obtinuta
w=8.8*18/44
w=3.6g H₂O

1mol...................18g H₂O
q moli..................3.6
q=3.6*1/18=0.2 moli H₂O