A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure :
What weight of `CO_2` can the cylinder hold under similar conditions of temperature and pressure ? (H=1, C = 12, O=16)

Explanation

To solve the problem, we need to determine how much carbon dioxide (CO₂) can be held in a gas cylinder that can hold 1 kg of hydrogen (H₂) under the same conditions of temperature and pressure.

### Step-by-Step Solution:

1. **Understand the Conditions**: The problem states that the gas cylinder can hold 1 kg of hydrogen at room temperature and pressure. We will use the concept of moles and molar mass to find the equivalent weight of CO₂.

2. **Calculate Moles of Hydrogen**:
- The molar mass of hydrogen (H₂) is:
...