65g...73g.........136g.....2g
Zn + 2HCl --> ZnCl2 + H2
130g..x=146g....y=272g... z=4g
n=m/M==>m=n*M=2*65=130g Zn4
Cm=md/M*Vs==>Vs=md/M/Cm=146/36.5/2=2 L HCl
n=m/M=4/2=2 moli H2
n=V/Vmolar==>V=n*Vmolar=2*22.4=44.8 L H2
MHCl=1+35.5=36.5g/mol
MH2=1*2=2g/mol
MZn=65g/mol
MZnCl2=65+2*35.5=136g/mol
Am notat "*" Inmultire si "/" linia de fractie..