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mol HCl = massa/Mr = 8/36,5 = 0,219 mol
Persamaan reaksi :
Zn + 2HCl → ZnCl₂ + H₂
a 0,03 0,219
r 0,03 0,06
_______________________
s - 0,159 0,03
mol ZnCl₂ = 0,03 mol
massa ZnCl₂ = mol x Mr
massa ZnCl₂ = 0,03 x 136
massa ZnCl₂ = 4,08
Jadi, massa zat yang dihasilkan adalah 4,08 gram