Answer: 62.7g ZnCl2
Explanation:
Zn+ 2HCl = ZnCl2 + H2
Atomic mass of Zn is 65
Atomic mass of Cl is 35.5
Atomic mass of H is 1
Molecular mass of ZnCl2 is {65+(35.5×2)}= 136
So,
65g of Zn produce 136g of ZnCl2
1g ofZn produce( 136÷65)gZnCl2
= 2. 09g
30g ofZn produce (2. 09×30)
=62.7g ZnCl2
the mass of ZnCl2 is 62.7g when 30g of Zn is reacted .
