Question

What is the volume occupied by .118 mol of helium

Answer 1

`2.64\text{ L}`

Step-by-step explanation:

Assuming that the helium is at standard temperature and pressure (STP), we can use the molar volume of an ideal gas at STP (22.4L) to solve for its volume.

`\text{Volume} = (\text{number of moles}) \cdot (\text{molar volume at STP})`

`V = (0.118\text{ mol}) \cdot (22.4 \text{ L/mol})`

`\boxed{V = 2.64\text{ L}}`

Note that we rounded to 3 significant figures because that is how many significant figures were given by the measurement of helium (0.118 mol).