A gas cylinder can hold 1 kg of hydrogen gas at room temperature and 1 atm pressure. Calculate the following:
The number of molecules of carbon dioxide in the cylinder. Give reasons to justify your answer. Mass of the substance

Explanation

To solve the problem, we will follow these steps:

### Step 1: Calculate the number of moles of hydrogen gas (H₂)
Given:
- Mass of hydrogen gas = 1 kg = 1000 g
- Molar mass of hydrogen (H₂) = 2 g/mol

Using the formula for moles:
...