Calculate mass of sodium which contains same number of atoms as are present in `4 g` of calcium (Atomic weight `Na = 23`, atomic weight `Ca = 40`)

Explanation

To solve the problem of calculating the mass of sodium that contains the same number of atoms as are present in 4 g of calcium, we can follow these steps:

### Step 1: Calculate the number of moles of calcium
To find the number of moles of calcium, we use the formula:

\[ \text{Number of moles} (n) = \frac{\text{Given mass}}{\text{Molar mass}} \]
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