Răspuns:
MH2=2x1=2g/mol
MH2O=2x1+16=18g/mol
2x2g.................2x18g
2H2 + O2 → 2H2O
xg......................360g
x=360x2/x2x18=calculeaza
calculam in moli
n=m/M=360/18=20moli H2O
2moli......................2moli
2H2 + O2 → 2H2O
ymoli....................20moli
y=20x2/2=calculeaza
Explicație:
