How many moles of oxygen atoms are present in 75 grams of pure calcium carbonate?

Explanation

To find out how many moles of oxygen atoms are present in 75 grams of pure calcium carbonate (CaCO₃), we can follow these steps:

### Step 1: Determine the molecular formula of calcium carbonate.
The molecular formula of calcium carbonate is CaCO₃.

### Step 2: Calculate the molar mass of calcium carbonate.
To find the molar mass, we need to sum the atomic masses of all the atoms in the formula:
- Atomic mass of Calcium (Ca) = 40 g/mol
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