............ 146 g....................... n moli
Zn + 2HCl => ZnCl2 + H2
........... 2x36,5.......................1
=> n = 146x1/2x36,5 = 2 moli H2
.... n moli a moli
2H2 + O2 => 2H2O
..... 2...........................2
=> a = nx2/2 = n = 2 moli H2O
M.molec apa = 18 g/mol
=> masa = n x M.molec = 2x18 = 36 g H2O