An organic compound made of C,H and N contains 20% nitrogen. Its minimum molecular weight is:

Explanation

To find the minimum molecular weight of the organic compound containing carbon (C), hydrogen (H), and nitrogen (N) with 20% nitrogen, we can follow these steps:

### Step-by-Step Solution:

1. **Define the Molecular Weight (X)**:
Let the molecular weight of the compound be represented as \( X \).

2. **Determine the Mass of Nitrogen**:
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