<u>**Answer:**</u>** The mass of bromine reacted is 160.6 grams.**

<u>**Explanation:**</u>

**To calculate the number of moles, we use the equation:**

**.....(1)**

Given mass of aluminium = 18.1 g

Molar mass of aluminium = 27 g/mol

**Putting values in equation 1, we get:**

**The chemical equation for the reaction of aluminium and bromide follows:**

**By Stoichiometry of the reaction:**

2 moles of aluminium reacts with 3 moles of bromine gas

So, 0.670 moles of aluminium will react with = of bromine gas.

**Now, calculating the mass of bromine gas, we use equation 1:**

Moles of bromine gas = 1.005 moles

Molar mass of bromine gas = 159.81 g/mol

**Putting values in equation 1, we get:**

**Hence, the mass of bromine reacted is 160.6 grams.**