Question

Question #67a4c

Answer 1

The mole fraction of He is `1.06/3` and 0.353 as a decimal.

Explanation:

Mole fraction is defined as

`("moles of one component")/("total moles of all components")`

In this case, we have 1.06 mol He and a total of 3 moles of all gases combined.

So, the mole fraction of He is `1.06/3`

One can leave it in fraction form, or as a decimal 0.353 (repeating).