the hardness of a water sample (in terms of Equivalents of `CaCO_(3)`) containing `10^(-3)MCaSO_(4)` Is :
(Molar mass of `CaSO_(4)=136 gmol^(-1)`)

Explanation

To find the hardness of a water sample containing \(10^{-3} \, M \, CaSO_4\) in terms of equivalents of \(CaCO_3\), we will follow these steps:

### Step 1: Understand the relationship between \(CaSO_4\) and \(CaCO_3\)
The hardness of water can be expressed in terms of equivalents of \(CaCO_3\). Since both \(CaSO_4\) and \(CaCO_3\) contribute to hardness, we need to find the equivalent amount of \(CaCO_3\) that corresponds to the given concentration of \(CaSO_4\).

### Step 2: Calculate the moles of \(CaSO_4\)
Given:
- Molarity of \(CaSO_4 = 10^{-3} \, M\)
...