Calculate the pressure exerted by `8.5 g` of ammonia `(NH_(3))` contained in a `0.5 L` vessel at `300 K`. For ammonia, `a=4.0 atm L^(2)mol^(-2)`, `b=0.036 L mol^(-1)`.

Explanation

To calculate the pressure exerted by 8.5 g of ammonia (NH₃) in a 0.5 L vessel at 300 K using the Van der Waals equation, we will follow these steps:

### Step 1: Calculate the number of moles of ammonia (NH₃)
To find the number of moles (n), we use the formula:
\[ n = \frac{\text{mass}}{\text{molar mass}} \]
The molar mass of ammonia (NH₃) is approximately \(14 + 3 \times 1 = 17 \, \text{g/mol}\).
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