Question

Illustrate the gram molecular mass.

Answer 1

Gram molecular mass:

1. The gram molecular mass equals one mole of the molar mass of the compound.
2. It is expressed in grams.
3. To calculate the gram molecular mass, multiply the subscript of each element with the atomic mass of that particular element and then add.

Example:

The gram molecular mass of Carbon dioxide $\left({\mathrm{CO}}_2\right)$can be calculated as:

$\begin{array}{rcl}\mathrm{Gram}\mathrm{molecular}\mathrm{mass}\mathrm{of}{\mathrm{CO}}_2& =& (\mathrm{Atomic}\mathrm{mass}\mathrm{of}\mathrm{C})+2*\left(\mathrm{Atomic}\mathrm{mass}\mathrm{of}\mathrm{O}\right)\\ & =& 12\mathrm{g}+2\left(16\mathrm{g}\right)\\ & =& 44\mathrm{g}\end{array}$