How many moles are there in `5 g` of calcium ?

Explanation

To find out how many moles are present in 5 grams of calcium, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the relationship between moles and mass**:
- According to the mole concept, 1 mole of any element is equivalent to its atomic mass in grams.

2. **Find the atomic mass of calcium**:
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