Answer: Option (3) is the correct answer.
Explanation:
Gram formula mass or molar mass is the sum of mass of all the individual atoms present in the compound or formula.
For example, gram formula mass of [tex]NH_{4}Cl[/tex] is calculated as follows.
[tex]NH_{4}Cl = Mass of N + 4 \times mass of H + mass of Cl[/tex]
= [tex](14.00 + 4 \times 1.00 + 35.45)[/tex] g/mol
= (14.00 + 4.00 + 35.45) g/mol
= 53.45 g/mol
= 53.5 g/mol (approx)
Thus, we can conclude that the gram formula mass of [tex]NH_{4}Cl[/tex] is 53.5 g/mol (approx)
