Question

State law of multiple proportions and define molar mass.

Answer 1

The law of multiple proportions, states that when two elements combine to form more than one compound, the mass of one element, which combines with a fixed mass of the other element, will always be ratios of whole numbers.

Molar mass can be defined as "The mass of a given substance (chemical element or chemical compound is in g) divided by its amount of substance in (mol). In other words, it is the ratio of mass of the molecule to the unified atomic mass unit. It is expressed in g/mol. SI unit Molar Mass: kg /mol".