Question

The mass of mole substance in gram is called? 
 

Answer 1

The mass of one mole of a substance in a gram is called its molar mass.

For instance, we can deduce a compound's formula by examining its composition, which is often expressed as the mass percentage of its constituent elements. Diverse methods exist for quantifying a property, such as heat capacity and specific heat capacity of a substance. Although these measurements pertain to the same attribute, they are distinct.

Similarly, there are various manners in which we express the mass of a substance, contingent on the amount under consideration. Here, we'll explore some frequently used expressions:

Atomic mass: This quantity pertains to the mass of a single atom of a substance. For instance, the atomic mass of hydrogen is 1.00784 atomic mass units (u).

Molecular mass: Specifically applicable to substances with diatomic molecules, like hydrogen gas, this signifies the mass of one molecule of the substance, amounting to 2.01568 u in the case of hydrogen.

Formula mass: Ionic compounds, devoid of molecules due to their composition of ions bonded by opposite charges, employ formula mass. In this context, formula units replace molecules, as exemplified by sodium chloride (NaCl) and potassium chloride (KCl).

Molar mass: This concept holds significant importance, extending beyond just chemistry to various other disciplines. It denotes the mass of one mole of a substance, expressed in grams per mole (g⋅mol−1). For instance, hydrogen's molar mass is 1.00784 g⋅mol−1.

In summary, the term "molar mass" designates the mass of one mole of a substance in grams. This particular expression encapsulates the fundamental idea of quantifying substance mass in relation to the mole concept.