4) Moles of ideal gases = 24 litres
A mole of any “ideal” gas takes up 24 litres, about the same volume as a balloon.
(1 litre volume = 10 x 10 x 10 cm3)
![A mole of gas takes up 24 litres which is about the size of a standard balloon](/images/user/base/Chemistry/12. Moles/2.12.12 An ideal mole of gas takes 24 litres.jpg)
Even though O2 and H2 look like this…
… and oxygen has more shells than hydrogen, both gases still take up the same volume.
![Chemistry is weird!](/images/user/base/Chemistry/12. Moles/2.12.14 Isnt chemistry weird picture.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-1.4df6ee6.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-2.d516bb3.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-1.b0b0513.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-2.f89189d.jpg)