How many coulombs are required to produce
20.0 g of calcium from molten `CaCl_(2)`.

Explanation

To determine how many coulombs are required to produce 20.0 g of calcium from molten calcium chloride (CaCl₂), we can follow these steps:

### Step 1: Determine the molar mass of calcium (Ca).
The molar mass of calcium (Ca) is approximately 40.08 g/mol.

### Step 2: Calculate the number of moles of calcium produced.
To find the number of moles of calcium in 20.0 g, we use the formula:
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