Question

How many moles of helium gas occupies 22.4 Lat 0°c and at 1 atmospheric pressure?

Options

• 1.0

• 0.11

• 0.9

• 1.11

Answer 1

1.0

Explanation:

We know that, pV = nRT

`=> "n" = "RT"/"pV"`

`= (1 " atm" xx 22.42 "L")/(0.0821" L atm"//"mol K" xx 273 "K")`

= 1 mol

1 mole of the gas occupies 22.4 L at 0° C and 1 atm pressure.