Find the number of acidic flux from the given compounds :
`CaCO_(3), Na_(2)B_(4)O_(7), MgSiO_(3),FeSiO_(3), P_(2)O_(5)`.

Explanation

To determine the number of acidic fluxes from the given compounds, we will analyze each compound's behavior in terms of acidity and basicity.

### Step-by-Step Solution:

1. **Identify the Compounds**: We have the following compounds to analyze:
- CaCO₃ (Calcium Carbonate)
- Na₂B₄O₇ (Sodium Tetraborate)
- MgSiO₃ (Magnesium Silicate)
- FeSiO₃ (Iron Silicate)
- P₂O₅ (Diphosphorus Pentoxide)

2. **Analyze CaCO₃**:
- When heated, CaCO₃ decomposes to form CaO (Calcium Oxide) and CO₂ (Carbon Dioxide).
- CaO reacts with water to form Ca(OH)₂ (Calcium Hydroxide), which is a base.
- **Conclusion**: CaCO₃ is a basic flux.

3. **Analyze Na₂B₄O₇**:
- Na₂B₄O₇ can dissociate into Na⁺ ions and B₄O₇²⁻ ions in solution.
- The B₄O₇²⁻ ion can act as a Lewis acid by accepting electrons.
- **Conclusion**: Na₂B₄O₇ is an acidic flux.

4. **Analyze MgSiO₃**:
- MgSiO₃, when hydrolyzed, forms Mg(OH)₂ (Magnesium Hydroxide), which is a base.
- **Conclusion**: MgSiO₃ is a basic flux.

5. **Analyze FeSiO₃**:
- FeSiO₃ also hydrolyzes to form Fe(OH)₃ (Iron Hydroxide), which is a base.
- **Conclusion**: FeSiO₃ is a basic flux.

6. **Analyze P₂O₅**:
- P₂O₅ can react with water to form H₃PO₄ (Phosphoric Acid), which exhibits acidic properties.
- **Conclusion**: P₂O₅ is an acidic flux.

7. **Count the Acidic Fluxes**:
- From our analysis, the compounds that are acidic fluxes are:
- Na₂B₄O₇
- P₂O₅
- Therefore, the total number of acidic fluxes is **2**.

### Final Answer:
The number of acidic fluxes from the given compounds is **2**.

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