Question

If zinc chloride weighs 136.28 g/mol, what is its molecular formula? show calculations

Answer 1

 

We know that Zinc (Zn) has a molar mass of 65.39 g/mol. Hence the remaining is:

136.28 - 65.39=70.89 

While molar mass of Chlorine (Cl) is 35.453 g/mol .

70.89 / 35.453 =2 => Cl 

 

So the formula is ZnCl2