Question

2. If there is a 100.0 g sample of LiF, how many moles of LiF are there?

Answer 1

`3.85\text{ moles}`

Step-by-step explanation:

Here, we want to get the number of moles present

Mathematically:

`number\text{ of moles = }\frac{mass\text{ }}{molar\text{ mass}}`

The molar mass of LiF is 26 g/mol

The number of moles is thus:

`Number\text{ of moles = }(100)/(26)=\text{ 3.85 moles}`