21.   When the molar mass is too low to produce sufficient entanglement, the material will flow more readily and behave like a viscous liquid.

22.   At high molar masses the glass temperature is essentially constant when measured by any given method, but decreases as the molar mass of the sample is lowered.

23.   Thus, for carbon dioxide, The relative molecular mass expressed as grams per mole is called the molar mass.

24.   Since we can obtain directly.

25.   Once again equation is used to calculate the molar mass and thus the relative molecular mass.

26.   Equation is then used to obtain the molar mass and thus the relative molecular mass.

27.   Molar mass is the mass per unit amount of substance.

28.   This expression can also be used to relate the molar masses of monatomic ions to the relative atomic masses of the elements.

29.   The molar mass of a molecular substance has the same numerical value as its relative molecular mass.

30.   This expression can also be used to calculate the molar masses of polyatomic ions and ionic compounds.