Question

The formula of a compound is AB2. The mass of 0.25 moles of this compound is 55 g, then the molecular mass of the compound is

Answer 1

From Formula Moles = Wt Given in Grams/Molecular Weight

We Have Moles = 0.25

Wt Given = 55g

Molecular Weight = Wt given in grams/Moles

= 55/0.25

= 220