Answer:
50. 5mol
Explanation:
The mass of Zinc required = 3.30 kg = 3300 grams
The relation between moles and mass is:
[tex]moles=\frac{mass}{atomicmass}[/tex]
Atomic mass of Zinc = 65.38g/mol
[tex]molesofZinc=\frac{3300}{65.38}[/tex]
[tex]molesofzinc=50.47mol[/tex]
The answer to three significant figures will be 50.5 mol