Identify `(X)` and `(Y)` in the following reactions :
Colemanite `+ (X) rarr Na_(2) B_(4) O_(7)`
`Na_2B_(4) O_(7) + (Y) rarr H_(3) BO_(3)`.

Explanation

To identify the compounds (X) and (Y) in the given reactions, we can analyze the reactions step by step.

### Step 1: Identify (X) in the first reaction
The first reaction is:
\[ \text{Colemanite} + (X) \rightarrow \text{Na}_2\text{B}_4\text{O}_7 \]

**Colemanite** is a mineral with the formula:
\[ \text{Ca}_2\text{B}_6\text{O}_{11} \]
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