Gay Lussac's Law — Avogadro's Law — Mole Concept — Question 10

Gram atoms is the relative atomic mass of an element expressed in grams.

$\text{Gram atoms} = \dfrac{\text{Mass in grams}}{\text{Relative At. mass [At. wt.]}} \\[0.5em] = \dfrac{88.75}{35.5} \\[0.5em] = 2.5 \text { gram atoms} \\[0.5em]$

Hence, gram-atoms in 88.75 g of chlorine is 2.5 g. atoms