# A sample of diatomic gas A has three times the mass of an equal volume of gas B under the same conditions. What is the ratio of the atomic mass of A to that of B?

##### 1 Answer

Mar 15, 2017

The atomic mass of

#### Explanation:

Let's say that the formula of Gas **A** is **B** is

**Avogadro's Law** tells us that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules.

Thus, if Gas **A** has three times the mass of an equal volume of Gas **B**, a molecule of Gas **A** must have three times the mass of an atom of Gas **B**.

But a molecule of Gas **A** contains two atoms of

Hence each atom of