How many coulombs are required to produce
40.0 g of aluminium from molten `Al_(2)O_(3)`.

Explanation

To determine how many coulombs are required to produce 40.0 g of aluminum from molten Al₂O₃, we can follow these steps:

### Step 1: Determine the oxidation state of aluminum in Al₂O₃
In Al₂O₃, let the oxidation number of aluminum be \( x \). Since there are 2 aluminum atoms and 3 oxygen atoms (with an oxidation state of -2), we can set up the equation:

\[ 2x + 3(-2) = 0 \]
...