a)\(Zn+2HCl-->ZnCl2+H2\)
\(n_{H2}=\frac{0,6}{2}=0,3\left(mol\right)\)
\(n_{Zn}=n_{H2}=0,3\left(mol\right)\)
\(m_{Zn}=0,3.65=19,5\left(g\right)\)
b)\(n_{HCl}=2n_{H2}=0,6\left(mol\right)\)
\(m_{HCl}=0,6.36,5=21,9\left(g\right)\)
c)\(n_{ZnCl2}=n_{H2}=0,3\left(mol\right)\)
\(m_{ZnCl2}=0,3.136=40,8\left(g\right)\)
Zn + 2HCl => ZnCl2 + H2
nH2 = 0.3 mol
=> nZn = nZnCl2 = nH2 = 0.3 mol
mZn = 0.3*65 = 19.5 g
mZnCl2 = 0.3*136=40.8 g
nHCl = 0.6 mol
mHCl = 0.6*36.5 = 21.9 g