Answer:
[tex]3.85\text{ moles}[/tex]Explanation:
Here, we want to get the number of moles present
Mathematically:
[tex]number\text{ of moles = }\frac{mass\text{ }}{molar\text{ mass}}[/tex]The molar mass of LiF is 26 g/mol
The number of moles is thus:
[tex]Number\text{ of moles = }\frac{100}{26}=\text{ 3.85 moles}[/tex]