Urea is a very important nitrogenous fertilizer. Its formula is `CON_2H_4`. Calculate the percentage of carbon in urea.
(C = 12,O = 16, N = 14 and H= 1)

Explanation

To calculate the percentage of carbon in urea (with the formula \( \text{CON}_2\text{H}_4 \)), follow these steps:

### Step 1: Determine the molecular mass of urea
First, we need to calculate the total molecular mass of urea by adding the atomic masses of each element in the formula.

- Carbon (C): 1 atom × 12 g/mol = 12 g/mol
- Oxygen (O): 1 atom × 16 g/mol = 16 g/mol
- Nitrogen (N): 2 atoms × 14 g/mol = 28 g/mol (since there are 2 nitrogen atoms)
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