Question

Answer 1

nZn = 16 :65 = 16/65 (mol) 
pthh : Zn + 2HCl --> ZnCl2 + H2
          \(\dfrac{16}{65}\)->\(\dfrac{32}{65}\)------------------>\(\dfrac{16}{65}\) (mol) 
=> VH2= \(\dfrac{16}{65}\) . 22,4 = 5,51 (L) 
=> mHCl = \(\dfrac{32}{65}\) . 36,5 = 17,96 (G) 
 N_Zn = 16/65 .  6.10²³ = 96/65 . 10²³ (nguyên tử)