What is the relation between mass and number of moles of a gas?

Explanation

To determine the relationship between mass and the number of moles of a gas, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Moles**:
- The number of moles (n) of a substance is a measure of the amount of that substance. It relates to the mass of the substance and its molar mass.

2. **Formula for Moles**:
...