# The elements phosphorus and bromine combine to form two binary compounds each containing 43.67% and 16.23% phosphorus, respectively. How would you determine the empirical formulas of these two compounds?

##### 1 Answer

1-

2-

#### Explanation:

Let us first discuss the first compound

1- We will assume

2- Find the number of mole of both elements:

3- Find the molar ratio by dividing by the smallest number of mole:

**Therefore, the empirical formula is: #P_2Br#**

Let us discuss the second compound

1- We will assume

2- Find the number of mole of both elements:

3- Find the molar ratio by dividing by the smallest number of mole:

**Therefore, the empirical formula is: #PBr_2#**