Formula mass is to be defined and the relationship between formula mass and molar mass is to be provided. Concept Introduction:  The formula mass of a compound is defined as the sum of the relative atomic masses of all the atoms present in the formula of the compound.  It represents the overall mass of all the atoms present in the compound.  For polyatomic ions, the number of atoms inside the brackets are multiplied by the subscript attached to the brackets.  Molar mass is the mass of 1 mole of substance.

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Chapter 4, Problem 12E

Interpretation Introduction

Interpretation:

Formula mass is to be defined and the relationship between formula mass and molar mass is to be provided.

Concept Introduction:

 The formula mass of a compound is defined as the sum of the relative atomic masses of all the atoms present in the formula of the compound.

 It represents the overall mass of all the atoms present in the compound.

 For polyatomic ions, the number of atoms inside the brackets are multiplied by the subscript attached to the brackets.

 Molar mass is the mass of 1 mole of substance.

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