Question

This Question comes from an ISCE specimen paper for IX.
Give Reason-
i)For calculating the percentage composition of a compund, its molecular weight must be known.
I don't know what kind of answer they are expecting for this. Can anybody help?

Answer 1

Answer

Percentage composition is used to calculate the percentage of the element or radical present in the compound.

For calculating percentage composition of a compound the molecular weights of different elements must be known.

Formula is :

Percentage = Part / Whole × 100

Hope it helps !!!