# A container has a volume of #12 L# and holds #15 mol# of gas. If the container is expanded such that its new volume is #24 L#, how many moles of gas must be injected into the container to maintain a constant temperature and pressure?

##### 1 Answer

Nov 26, 2017

#### Answer:

#### Explanation:

**Avogadro's law:** Equal volumes of all gases, at the same temperature and pressure, have the same number of molecules.

Mathematically,

#V ∝ n#