Question

Zinc sulphate contains 22.6 5% zn and 40 3.9% h2o if the law of constant proportion is true then the mass of zinc required to give 40 gram of crystal will be

Answer 1

100g of crystals are obtained from =22.65g of Zn

∴

∴

20g of crystals are obtained from =

22.65

100

22.65100

×20

×20

⇒4.53g

⇒4.53g