A cylinder contains 68 g of ammonia at STP.
What is the volume occupied by this gas?

Explanation

To find the volume occupied by 68 g of ammonia (NH₃) at standard temperature and pressure (STP), we can follow these steps:

### Step 1: Calculate the moles of ammonia (NH₃)
To find the number of moles, we use the formula:

\[ \text{Moles of NH}_3 = \frac{\text{Given mass}}{\text{Molar mass}} \]
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