8.5 grams of ammonia are dissolved to form 4L aqueous solution. Calculate the active mass.

Explanation

To calculate the active mass of ammonia in the given solution, follow these steps:

### Step 1: Calculate the Molar Mass of Ammonia (NH₃)
The molar mass of ammonia (NH₃) can be calculated as follows:
- Molar mass of Nitrogen (N) = 14 g/mol
- Molar mass of Hydrogen (H) = 1 g/mol
- Since there are 3 Hydrogen atoms in ammonia, the total mass contributed by Hydrogen = 3 × 1 = 3 g/mol.

...